Monday, January 18, 2010

algebra ch. 6 review

pg. 449

12. x/x+1+1/2x+2=7/8

-7/8,x/x+1/2x+2

factor, simplify, combine like terms, find the lcd.

build the denominator to have the same number for the bottom.

8 is the lcd

8(x+1)(X 1
______+ __ = 8(x+1) 7/8


(X+1) 2(x+1)

8x+8x 8x+8
________+
x+1 _________ x

2

cancel out the x+1

4x(2-2)(2+2x)+ 8x+4=7x+7

7 multiply by x= 7x using the distributive method


8-1=7

answer 8x+4=7x+7

combine like terms;

x=3

Marie Zajac

Bachelor's Degree in psychology with a concentration in rehabilitation counseling.

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