12x+7+2x-1=90

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Solution for 12x+7+2x-1=90 equation: 



12x+7+2x-1=90

We move all terms to the left:

12x+7+2x-1-(90)=0

We add all the numbers together, and all the variables

14x-84=0

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

14x=84

x=84/14

x=6

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