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-3=2(q-7)-7
We move all terms to the left:
-3-(2(q-7)-7)=0
We calculate terms in parentheses: -(2(q-7)-7), so:We get rid of parentheses
2(q-7)-7
We multiply parentheses
2q-14-7
We add all the numbers together, and all the variables
2q-21
Back to the equation:
-(2q-21)
-2q+21-3=0
We add all the numbers together, and all the variables
-2q+18=0
We move all terms containing q to the left, all other terms to the right
-2q=-18
q=-18/-2
q=+9
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