(12x-2)+(5x+7)=90

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Solution for (12x-2)+(5x+7)=90 equation: 



(12x-2)+(5x+7)=90

We move all terms to the left:

(12x-2)+(5x+7)-(90)=0

We get rid of parentheses

12x+5x-2+7-90=0

We add all the numbers together, and all the variables

17x-85=0

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

17x=85

x=85/17

x=5

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