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8-q/2=4
We move all terms to the left:
8-q/2-(4)=0
We add all the numbers together, and all the variables
-q/2+4=0
We multiply all the terms by the denominator
-q+4*2=0
We add all the numbers together, and all the variables
-1q+8=0
We move all terms containing q to the left, all other terms to the right
-q=-8
q=-8/-1
q=+8
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