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4+(q-2)4=8
We move all terms to the left:
4+(q-2)4-(8)=0
We add all the numbers together, and all the variables
(q-2)4-4=0
We multiply parentheses
4q-8-4=0
We add all the numbers together, and all the variables
4q-12=0
We move all terms containing q to the left, all other terms to the right
4q=12
q=12/4
q=3
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