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7q+2=q-4
We move all terms to the left:
7q+2-(q-4)=0
We get rid of parentheses
7q-q+4+2=0
We add all the numbers together, and all the variables
6q+6=0
We move all terms containing q to the left, all other terms to the right
6q=-6
q=-6/6
q=-1
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