3x-7+2x+12=90

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Solution for 3x-7+2x+12=90 equation: 



3x-7+2x+12=90

We move all terms to the left:

3x-7+2x+12-(90)=0

We add all the numbers together, and all the variables

5x-85=0

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

5x=85

x=85/5

x=17

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