12x-13=2x+17=7x+2

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Solution for 12x-13=2x+17=7x+2 equation: 



12x-13=2x+17=7x+2

We move all terms to the left:

12x-13-(2x+17)=0

We get rid of parentheses

12x-2x-17-13=0

We add all the numbers together, and all the variables

10x-30=0

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

10x=30

x=30/10

x=3

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