12-9x=4x-78

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Solution for 12-9x=4x-78 equation: 



12-9x=4x-78

We move all terms to the left:

12-9x-(4x-78)=0

We get rid of parentheses

-9x-4x+78+12=0

We add all the numbers together, and all the variables

-13x+90=0

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

-13x=-90

x=-90/-13

x=6+12/13

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