4x-12=9x+8

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Solution for 4x-12=9x+8 equation: 



4x-12=9x+8

We move all terms to the left:

4x-12-(9x+8)=0

We get rid of parentheses

4x-9x-8-12=0

We add all the numbers together, and all the variables

-5x-20=0

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

-5x=20

x=20/-5

x=-4

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