7x+39=12+4x

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Solution for 7x+39=12+4x equation: 



7x+39=12+4x

We move all terms to the left:

7x+39-(12+4x)=0

We add all the numbers together, and all the variables

7x-(4x+12)+39=0

We get rid of parentheses

7x-4x-12+39=0

We add all the numbers together, and all the variables

3x+27=0

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

3x=-27

x=-27/3

x=-9

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