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4x+12-9x=15-15x+10x-3
We move all terms to the left:
4x+12-9x-(15-15x+10x-3)=0
We add all the numbers together, and all the variables
4x-9x-(-5x+12)+12=0
We add all the numbers together, and all the variables
-5x-(-5x+12)+12=0
We get rid of parentheses
-5x+5x-12+12=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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