7x+12-x=-9x

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



7x+12-x=-9x

We move all terms to the left:

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

We add all the numbers together, and all the variables

6x-(-9x)+12=0

We get rid of parentheses

6x+9x+12=0

We add all the numbers together, and all the variables

15x+12=0

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

15x=-12

x=-12/15

x=-4/5

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