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2=90-Q
We move all terms to the left:
2-(90-Q)=0
We add all the numbers together, and all the variables
-(-1Q+90)+2=0
We get rid of parentheses
1Q-90+2=0
We add all the numbers together, and all the variables
Q-88=0
We move all terms containing Q to the left, all other terms to the right
Q=88
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