-123=7x+6x+7

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Solution for -123=7x+6x+7 equation: 



-123=7x+6x+7

We move all terms to the left:

-123-(7x+6x+7)=0

We add all the numbers together, and all the variables

-(13x+7)-123=0

We get rid of parentheses

-13x-7-123=0

We add all the numbers together, and all the variables

-13x-130=0

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

-13x=130

x=130/-13

x=-10

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