12x+15=13x+7

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Solution for 12x+15=13x+7 equation: 



12x+15=13x+7

We move all terms to the left:

12x+15-(13x+7)=0

We get rid of parentheses

12x-13x-7+15=0

We add all the numbers together, and all the variables

-1x+8=0

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

-x=-8

x=-8/-1

x=+8

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