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12=x/6=3
We move all terms to the left:
12-(x/6)=0
We add all the numbers together, and all the variables
-(+x/6)+12=0
We get rid of parentheses
-x/6+12=0
We multiply all the terms by the denominator
-x+12*6=0
We add all the numbers together, and all the variables
-1x+72=0
We move all terms containing x to the left, all other terms to the right
-x=-72
x=-72/-1
x=+72
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