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5q=21/2
We move all terms to the left:
5q-(21/2)=0
We add all the numbers together, and all the variables
5q-(+21/2)=0
We get rid of parentheses
5q-21/2=0
We multiply all the terms by the denominator
5q*2-21=0
Wy multiply elements
10q-21=0
We move all terms containing q to the left, all other terms to the right
10q=21
q=21/10
q=2+1/10
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