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2x=21/31
We move all terms to the left:
2x-(21/31)=0
We add all the numbers together, and all the variables
2x-(+21/31)=0
We get rid of parentheses
2x-21/31=0
We multiply all the terms by the denominator
2x*31-21=0
Wy multiply elements
62x-21=0
We move all terms containing x to the left, all other terms to the right
62x=21
x=21/62
x=21/62
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