7=15+4x

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Solution for 7=15+4x equation: 



7=15+4x

We move all terms to the left:

7-(15+4x)=0

We add all the numbers together, and all the variables

-(4x+15)+7=0

We get rid of parentheses

-4x-15+7=0

We add all the numbers together, and all the variables

-4x-8=0

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

-4x=8

x=8/-4

x=-2

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