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-q/2-13=-11
We move all terms to the left:
-q/2-13-(-11)=0
We add all the numbers together, and all the variables
-q/2-2=0
We multiply all the terms by the denominator
-q-2*2=0
We add all the numbers together, and all the variables
-1q-4=0
We move all terms containing q to the left, all other terms to the right
-q=4
q=4/-1
q=-4
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