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5(q-7)-3(q-4)+4(q+2)=0
We multiply parentheses
5q-3q+4q-35+12+8=0
We add all the numbers together, and all the variables
6q-15=0
We move all terms containing q to the left, all other terms to the right
6q=15
q=15/6
q=2+1/2
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