-18+3x=7x+42

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Solution for -18+3x=7x+42 equation: 



-18+3x=7x+42

We move all terms to the left:

-18+3x-(7x+42)=0

We get rid of parentheses

3x-7x-42-18=0

We add all the numbers together, and all the variables

-4x-60=0

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

-4x=60

x=60/-4

x=-15

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