3x+12=8x-78

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Solution for 3x+12=8x-78 equation: 



3x+12=8x-78

We move all terms to the left:

3x+12-(8x-78)=0

We get rid of parentheses

3x-8x+78+12=0

We add all the numbers together, and all the variables

-5x+90=0

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

-5x=-90

x=-90/-5

x=+18

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