-7-9=131+7x

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Solution for -7-9=131+7x equation: 



-7-9=131+7x

We move all terms to the left:

-7-9-(131+7x)=0

We add all the numbers together, and all the variables

-(7x+131)-7-9=0

We add all the numbers together, and all the variables

-(7x+131)-16=0

We get rid of parentheses

-7x-131-16=0

We add all the numbers together, and all the variables

-7x-147=0

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

-7x=147

x=147/-7

x=-21

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