12-2x=9x+78

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Solution for 12-2x=9x+78 equation: 



12-2x=9x+78

We move all terms to the left:

12-2x-(9x+78)=0

We get rid of parentheses

-2x-9x-78+12=0

We add all the numbers together, and all the variables

-11x-66=0

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

-11x=66

x=66/-11

x=-6

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