18=-7x-2-1

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Solution for 18=-7x-2-1 equation: 



18=-7x-2-1

We move all terms to the left:

18-(-7x-2-1)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

7x+3+18=0

We add all the numbers together, and all the variables

7x+21=0

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

7x=-21

x=-21/7

x=-3

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