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