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