12+7x=15+9x+7x

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Solution for 12+7x=15+9x+7x equation: 



12+7x=15+9x+7x

We move all terms to the left:

12+7x-(15+9x+7x)=0

We add all the numbers together, and all the variables

7x-(16x+15)+12=0

We get rid of parentheses

7x-16x-15+12=0

We add all the numbers together, and all the variables

-9x-3=0

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

-9x=3

x=3/-9

x=-1/3

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