42=-7x-42

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Solution for 42=-7x-42 equation: 



42=-7x-42

We move all terms to the left:

42-(-7x-42)=0

We get rid of parentheses

7x+42+42=0

We add all the numbers together, and all the variables

7x+84=0

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

7x=-84

x=-84/7

x=-12

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