7=3x-12x=13x=1

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Solution for 7=3x-12x=13x=1 equation: 



7=3x-12x=13x=1

We move all terms to the left:

7-(3x-12x)=0

We add all the numbers together, and all the variables

-(-9x)+7=0

We get rid of parentheses

9x+7=0

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

9x=-7

x=-7/9

x=-7/9

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