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-3(q+-3)=18
We move all terms to the left:
-3(q+-3)-(18)=0
We add all the numbers together, and all the variables
-3(q-3)-18=0
We multiply parentheses
-3q+9-18=0
We add all the numbers together, and all the variables
-3q-9=0
We move all terms containing q to the left, all other terms to the right
-3q=9
q=9/-3
q=-3
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