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10x+15x-9+3=-6x+3-9
We move all terms to the left:
10x+15x-9+3-(-6x+3-9)=0
We add all the numbers together, and all the variables
10x+15x-(-6x-6)-9+3=0
We add all the numbers together, and all the variables
25x-(-6x-6)-6=0
We get rid of parentheses
25x+6x+6-6=0
We add all the numbers together, and all the variables
31x=0
x=0/31
x=0
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