7x-7=13x+12x

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



7x-7=13x+12x

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x-(+25x)-7=0

We get rid of parentheses

7x-25x-7=0

We add all the numbers together, and all the variables

-18x-7=0

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

-18x=7

x=7/-18

x=-7/18

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