# Simple equations X2+x (x-5)-x+7

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### Hi I have Casio fx -991es plus calculator its give me wrong answer in complex number equations

It does not solve complex number equations. You can do simple calculations on complex numbers: addition, multiplication, etc. But nothing fancy.

Oct 26, 2015 | Casio Office Equipment & Supplies

### How do I graph a simple equation, without getting an error 07 message? y=-1.5x+3

Error 07 Syntax
Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign
y= (-) 1.5*x +3
Try entering it as 3 - 1.5*x

Jun 11, 2014 | Texas Instruments TI-86 Calculator

### When I try to enter a simple equation and graph it, I get error 07 message instead of graph.

Error 07 Syntax
Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign
y= (-) 1.5*x +3
Try entering it as 3 - 1.5*x

Jun 11, 2014 | Texas Instruments TI-86 Calculator

### Simple equations

That's an expression, not an equation, which simplifies to 7x-5

Mar 05, 2014 | Computers & Internet

### Simple equations

This is not an equation. It is an expression in two variables. What you can do is to simplify it by combining like-terms (the terms with x)
1.5x +0.5y+0.2x This gives 1.7x+0.5y

Feb 18, 2014 | Computers & Internet

### How can i write this in my calculator example. 2x=10 the answer is x=5 but how can i put x in the calculator

What you want to do is solve the linear equation 2x=10 to find the value of the unknown x that makes the equality true. Solving an equation usually involves rearranging therms, factors and so on. However your calculator was not designed to handle the solution of equations, no matter how simple they are.
Some Casio scientific calculators can solve some types of equations (polynomials of degree 2 or 3, simultaneous linear equations in up to 3 unknowns). These are the FX-115 ES (Plus) and FX-991 ES (Plus C). Other equivalent models are sold in the world under different names.

Oct 16, 2013 | Casio FX350MS Scientific Calculator

### I need assistance understanding this algebra equation and the steps to solve it. 7+(9-5x)=5(2-x)

this is a simple algebraic equation in which we have to calculate the value of 'x' using simple operations

7+(9-5x)=5(2-x)

step 1(pen the brackets) 7+9-5x=10-5x
step 2(add 7 and 9) 16-5x=10-5x

now as 5x gets cancelled both the sides of the equal sign therefore no solution of this algebraic equation exist.

Mar 24, 2011 | MathRescue Word Problems Of Algebra Lite

### How do i put the equation x+4y=20 on my calculator?

You cannot. The TI-30XA is a simple calculator lacking any symbolic algebra or equation processing. However, if your task is "given a value for x, what is the value for y" for the equation you give, you can rearrange it a little:

Thus, if you want to determine the value of y for x = 16, key in 5 [-] 16 [&#247;] 4 [=] and get the result y = 1. To double check, substitute x and y in the original equation:
16 + 4 x 1 = 16 + 4 = 20.

Feb 12, 2011 | Texas Instruments TI-30XA Calculator

### Is there any way you can find the derivative without saying a point value?

Do you mean as in a linear equation? If so it is simple the slope of the equation. If you are referring to an exponential equation the derivative is always changing so no.

Sep 23, 2010 | Texas Instruments TI-Nspire Graphic...

### Solve comlex equation

Hello,
I do not understand what you mean by solve complex equations, but if you want to manipulate complex numbers here are the tools you need to enter your complex numbers. Operations and function evaluations do not need special symbols.

Hope it helps.

Oct 31, 2008 | Casio FX-9860G Graphic Calculator

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