-3x=-9x+12

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Solution for -3x=-9x+12 equation: 



-3x=-9x+12

We move all terms to the left:

-3x-(-9x+12)=0

We get rid of parentheses

-3x+9x-12=0

We add all the numbers together, and all the variables

6x-12=0

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

6x=12

x=12/6

x=2

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