9-9x-12x=-7x

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



9-9x-12x=-7x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-21x-(-7x)+9=0

We get rid of parentheses

-21x+7x+9=0

We add all the numbers together, and all the variables

-14x+9=0

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

-14x=-9

x=-9/-14

x=9/14

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