-42=-3.5x

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Solution for -42=-3.5x equation: 



-42=-3.5x

We move all terms to the left:

-42-(-3.5x)=0

We get rid of parentheses

3.5x-42=0

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

3.5x=42

x=42/3.5

x=12

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