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-18+2q-19=-2q+7
We move all terms to the left:
-18+2q-19-(-2q+7)=0
We add all the numbers together, and all the variables
2q-(-2q+7)-37=0
We get rid of parentheses
2q+2q-7-37=0
We add all the numbers together, and all the variables
4q-44=0
We move all terms containing q to the left, all other terms to the right
4q=44
q=44/4
q=11
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