7x-12x+9=2x-12

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Solution for 7x-12x+9=2x-12 equation: 



7x-12x+9=2x-12

We move all terms to the left:

7x-12x+9-(2x-12)=0

We add all the numbers together, and all the variables

-5x-(2x-12)+9=0

We get rid of parentheses

-5x-2x+12+9=0

We add all the numbers together, and all the variables

-7x+21=0

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

-7x=-21

x=-21/-7

x=+3

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