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12/2=x/42
We move all terms to the left:
12/2-(x/42)=0
We add all the numbers together, and all the variables
-(+x/42)+12/2=0
We add all the numbers together, and all the variables
-(+x/42)+6=0
We get rid of parentheses
-x/42+6=0
We multiply all the terms by the denominator
-x+6*42=0
We add all the numbers together, and all the variables
-1x+252=0
We move all terms containing x to the left, all other terms to the right
-x=-252
x=-252/-1
x=+252
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