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Can't, add or subtract 2+2 does not add up to 4.

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If their are two negative numbers in a multi step equations i add or subtract to undo


That depends on what you're trying to undo. If the last thing you did was add, then you subtract to undo. If the last thing you did was subtract, then you add to undo.

May 07, 2014 | Computers & Internet

1 Answer

Add and subtract fractions with like denominators


Just add or subtract the numerators.

For example, to subtract 1/7 from 3/7, simply subtract1 from 3 to get 2. The answer is then 2/7.

Jan 13, 2014 | ixl.com

1 Answer

Add and subtract fractions with like demominators


Just add or subtract the numerators.

For example, to add 1/7 and 2/7, simply add the 1 and 2 to get 3. The answer is then 3/7.

Jan 13, 2014 | ixl.com

1 Answer

I want to create an if else statement with regards to this problem for ms excel 2007. the conditions are if month>=3 plus 1/2 but if not then minus 1/2.


It seems to have botched your sign before the =3 but lets say that you used "less than" or equal to 3.
(if you used Greater Than, then simply replace "less than" with "greater than" in the example here)

The easiest thing to do is subtract 1/2 no matter what and then say if month is less than or equal to 3 then add 1.
this way, if the month is NOT less or equal to 3, it has already subtracted 1/2, satisfying the "if not" part.
If the month IS less or equal, it adds 1 which compensates for the 1/2 we already subtracted, plus another 1/2 giving an end result of plus 1/2.

This makes it a simple, single if statement that is satisfied in the other direction without having to overcomplicate the issue.

Apr 27, 2011 | Microsoft Computers & Internet

1 Answer

My calculator will add, but after my total and then I want to subtract, it subtracts by the number I added.


If your calculator is more of an adding machine it works a little bit differently than a calculator. For an example: 10 + 5 - 2 on your machine do the addition of 10 + 5, then to subtract the 2 press 2 then the minus sign to get the total of 13. I hope this is helpful.

Feb 06, 2011 | Canon Office Equipment & Supplies

1 Answer

How do I add and subtract on this thing?


Hello,
I do know what calculator you have but on most calculators you have digit keys to key in numbers, operation keys (multiplication, division, addition, subtraction), function keys (log, exponential, %, square root, square or a power) and you have the = key to obtain the result of the calculation.

Press the [ON] button

To add 2 numbers, exemple 12 and 13
12 [+ key] 13 [= key]. Calculator displays 25, or 25.00 or 25.0000...

To subtract
13 [- key] 7 [=key] . Calculator displays 6 or 6.00, 6.0000....

To multiply
32 [x key] 5 [= key]. Calculator displays 160.

You may have memory keys, to store values. They may be labeled M to enter a number in memory, M+ to add a number to the one already in memory, M- to subtract from the number already in memory.

Hope it gets you started.

Oct 10, 2009 | Canon Office Equipment & Supplies

1 Answer

I can't seem to do simple subtraction with my Victor 1208-2. When I subtract say 5-4, I get a negative 9. Is there a setting or do I need to press something different to get simple subtraction to work?


When you want to complete a problem on an adding machine, such as "7 - 3," you would not key in "7," then the subtraction sign, then "3" and then an equal sign. If you do, then you will get an answer of "-4," and you know that is not the correct answer. Again, you have to think like an accountant when you are working with your adding machine. To figure this subtraction problem on an adding machine, you would need to key in "7," the addition sign, "3" and then the subtraction sign; you would get the answer of 4. You are actually working the problem as "7 + (-3)." This would be true on most modern day machines. In order to subtract, you have to add the negative number.

Sep 25, 2009 | Victor 1208-2 Calculator

4 Answers

What does MC,MR,M-,M+ on the calculator mean and do?


Hi,

MR is Memory Recall
MC is Memory Clear
M+ is Memory add
M- is Memory subtract

These are used to add and subtract the answers to multi-step equations so you can do the small steps with the calculator, then store, change or recall the total as needed. You might add a long string of numbers in groups this way. Or you can do all operations in one parenthesis, then just store the total of each.

A good problem to illustrate this would be : (123 x 3) + (55 - 24) + (10^2) - (7 x 8) = ???
Using MR, M+ and M-, you can do each one as a group, and only store the answers. 123 x 3 = 369 so M+ to put 369 in memory. Clear it from the calculator. 55 - 24 = 31, so M+ to put this in memory and add to the 369 already there. Clear it from the calculator. 10^2 = 100, so M+ this to memory also to add it. Clear it from the calculator. 7 x 8 = 56 so M- this to SUBTRACT it from memory. Clear it from the calculator if desired. Now, when you then hit MR, you will get the total of all of these small equations in parenthesis -- 444.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Sep 18, 2009 | Office Equipment & Supplies

1 Answer

Electricity bill coding in java


First think how you would solve this problem yourself on a piece of paper. Then try programming it using the things you learned (if they've given you this assignment without teaching you to multiply, subtract and use if's, drop the course).
Well here is an idea.

Take the total kilowattage and send it to a function. What the function will do is subtract 14KW from the total Kilowattage and add the amount for the first 14KW then subtract 85KW from the total KW and add the amount for the 85KW. But once you subtract the number of KW from the total make sure to check if the total KW isn't negative, if so just break out of the function and return the total due.

Or if you have formula for how much the rate grows over how many miles.

For example lets say the rate grows by $1 every time the KW doubles you could have something like

int rate = 1; //Begining rate
int KW = 14; //First flat rate
int amount; //total amount they have to pay
while(totalKW > 0)
{
totalKW -= KW; //subtract the first rate
if(totalKW <= 0) //check if too much subtracted
break; //if so break
amount += rate; //add the rate to the total

rate += 1; // Add $1 to the rate every time
KW *= 2; // KW is doubled
}

Jan 05, 2009 | Computers & Internet

1 Answer

Computer


Any formula in Excel starts with the equals sign ("="). This is how Excel distinguishes between formulas and literal values. Knowing this, you can create lots of formulas using the usual operators of +, -, * and / for addition, subtraction, multiplication and division, respectively. Please see the examples below.

Add 1 + 1: =1+1
Add the contents of cell A1 to the contents of cell B1: =A1+B1

Subtract 2 - 1: =2-1
Add the contents of cell A1 from the contents of cell B1: =B1-A1

Multiply 1 times 2: =1*2
Multiply the contents of cell A1 times the contents of cell B1: =A1*B1

I hope this resolves the question. If not, please let me know.

Aug 08, 2008 | Microsoft Computers & Internet

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