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12=-5x+-8
We move all terms to the left:
12-(-5x+-8)=0
We add all the numbers together, and all the variables
-(-5x-8)+12=0
We get rid of parentheses
5x+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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