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4=q/31
We move all terms to the left:
4-(q/31)=0
We add all the numbers together, and all the variables
-(+q/31)+4=0
We get rid of parentheses
-q/31+4=0
We multiply all the terms by the denominator
-q+4*31=0
We add all the numbers together, and all the variables
-1q+124=0
We move all terms containing q to the left, all other terms to the right
-q=-124
q=-124/-1
q=+124
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