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8q+7q+2q+q+2q=12
We move all terms to the left:
8q+7q+2q+q+2q-(12)=0
We add all the numbers together, and all the variables
20q-12=0
We move all terms containing q to the left, all other terms to the right
20q=12
q=12/20
q=3/5
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