7=12+15x

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Solution for 7=12+15x equation: 



7=12+15x

We move all terms to the left:

7-(12+15x)=0

We add all the numbers together, and all the variables

-(15x+12)+7=0

We get rid of parentheses

-15x-12+7=0

We add all the numbers together, and all the variables

-15x-5=0

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

-15x=5

x=5/-15

x=-1/3

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