(12x+8)+(8x-8)=90

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Solution for (12x+8)+(8x-8)=90 equation: 



(12x+8)+(8x-8)=90

We move all terms to the left:

(12x+8)+(8x-8)-(90)=0

We get rid of parentheses

12x+8x+8-8-90=0

We add all the numbers together, and all the variables

20x-90=0

We move all terms containing x to the left, all other terms to the right

20x=90

x=90/20

x=4+1/2

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