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-8x+12+9x=4+x+8
We move all terms to the left:
-8x+12+9x-(4+x+8)=0
We add all the numbers together, and all the variables
-8x+9x-(x+12)+12=0
We add all the numbers together, and all the variables
x-(x+12)+12=0
We get rid of parentheses
x-x-12+12=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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