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Algebra 4x+7=2(x-3)

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2x-5y=13

Posted on Jun 16, 2013

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4x+7=2(x-3)
4x+7=2x-6
4x-2x=-7-6
2x = -13
2x/2 = -13/2
x = -6.5

Posted on Mar 03, 2009

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Paul 3 years younger to his friend peter. In seven years, the product of their ages would be 5 more than the product of their ages 5 years ago. How old are they now?

Posted on Oct 31, 2008

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Posted on Jan 02, 2017

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What does polynomial function mean?


Let us backtrack so as to better jump.
An algebraic expression may contain one or several algebraic terms, separated by a plus sign or a or a minus and a sign.
Each algebraic term is the product of a constant coefficient and a power of some variable, or the powers of several variables.
Example of an algebraic term 3(x^2)(y^6)....
If the exponents of the various powers are positive integers, the term is called a monomial. In short no square roots, or fractionary powers of the variables appear in monomials. Thus 2/x, 3SQRT(x), or 1/x^5 are not monomials.
Finally, a polynomial is an algebraic expression made up of one or more monomials.
Example P(X)=(1/3)X^7-(SQRT(5)*X^4+ 16X-25 is a polynomial of degree 7 in the indeterminate/variable X
Q(X,Y)= 3(X^3)*Y^2 + 4X-5Y+10 is a polynomial of degree 5 in the variables X and Y.

Oct 01, 2014 | Office Equipment & Supplies

1 Answer

What is the inverse of 3x/4x-1


If your question is the inverse of 3x / (4x - 1) then

(4x - 1) / 3x

If you meant (3x / 4x) - 1 then

- 4

Jun 26, 2014 | SoftMath Algebrator - Algebra Homework...

1 Answer

4x - 2x + 1 = 5 + x - 7


Start by combining like terms on each side of the equation.
Remember, when working with variables the real numbers always come last in the equation(i.e. 5+x-7=x+5-7)
Once you have this completed move all variables to one side and all whole numbers to the other side. Solve from there.

May 17, 2012 | MathRescue Word Problems Of Algebra Lite

1 Answer

-4x-3(x-1)=17


-4x -3(x-1)=17 -4x-3x+3=17 -7x=17-3 -7x=14 X=-14/7 X= -2

Oct 27, 2011 | SoftMath Algebrator - Algebra Homework...

2 Answers

-20=-4x-6x


try to collect the like terms:-20=-10x
divide both sides the coefficient of X which -10
X=-20/-10
X=2

Jan 17, 2010 | SoftMath Algebrator - Algebra Homework...

1 Answer

How to solve (4+x) (5-x)/(2+x) (7-x)=1


(4+x)(5-x)=(2+x)(7-x)
20-4x+5x-x^2=14-2x+7x-x^2
20+x=14+5x
20-14=4x
x=3/2:ans;

Oct 21, 2009 | SoftMath Algebrator - Algebra Homework...

1 Answer

Divide 56Kg in the ratio of 4:3


You just need to divide the 56 by 7 in order to get the right base, then multiply that result by 4 and then 3 in order to get the answers. So...

56/7 is 8. 8*4 is 32, and 8*3 is 24.

32Kg and 24Kg

You can do this with algebra as well, equation is 4x + 3x = 56.

Sep 17, 2009 | Maytag EPIC MFW9700S Front Load Washer

1 Answer

4x+8y=20 -4x+2y=-30


4x+8y=20 || /4
x+2y=5
x=5-2y

-4x+2y=-30 || /2
-2x+y=-15
-2(5-2y)+y=-15
-10+4y+y=-15
5y=-5
y=-1

x=5-2y || y=-1
x=5-2(-1)
x=5+2
x=7

Mar 10, 2009 | Bagatrix Algebra Solved! 2005 (105101) for...

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