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4+2y=7y-3
We move all terms to the left:
4+2y-(7y-3)=0
We get rid of parentheses
2y-7y+3+4=0
We add all the numbers together, and all the variables
-5y+7=0
We move all terms containing y to the left, all other terms to the right
-5y=-7
y=-7/-5
y=1+2/5
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