7=15+3x

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Solution for 7=15+3x equation: 



7=15+3x

We move all terms to the left:

7-(15+3x)=0

We add all the numbers together, and all the variables

-(3x+15)+7=0

We get rid of parentheses

-3x-15+7=0

We add all the numbers together, and all the variables

-3x-8=0

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

-3x=8

x=8/-3

x=-2+2/3

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