x-123-x=x+4x+7

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Solution for x-123-x=x+4x+7 equation: 



x-123-x=x+4x+7

We move all terms to the left:

x-123-x-(x+4x+7)=0

We add all the numbers together, and all the variables

x-x-(5x+7)-123=0

We add all the numbers together, and all the variables

-(5x+7)-123=0

We get rid of parentheses

-5x-7-123=0

We add all the numbers together, and all the variables

-5x-130=0

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

-5x=130

x=130/-5

x=-26

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