5x+9-8x-12=18

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Solution for 5x+9-8x-12=18 equation: 



5x+9-8x-12=18

We move all terms to the left:

5x+9-8x-12-(18)=0

We add all the numbers together, and all the variables

-3x-21=0

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

-3x=21

x=21/-3

x=-7

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