7x+2(x-1)+20=-90

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Solution for 7x+2(x-1)+20=-90 equation: 



7x+2(x-1)+20=-90

We move all terms to the left:

7x+2(x-1)+20-(-90)=0

We add all the numbers together, and all the variables

7x+2(x-1)+110=0

We multiply parentheses

7x+2x-2+110=0

We add all the numbers together, and all the variables

9x+108=0

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

9x=-108

x=-108/9

x=-12

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