-5x+42=-7x+12

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Solution for -5x+42=-7x+12 equation: 



-5x+42=-7x+12

We move all terms to the left:

-5x+42-(-7x+12)=0

We get rid of parentheses

-5x+7x-12+42=0

We add all the numbers together, and all the variables

2x+30=0

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

2x=-30

x=-30/2

x=-15

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