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3.5y-7.2=-4.5y+702
We move all terms to the left:
3.5y-7.2-(-4.5y+702)=0
We get rid of parentheses
3.5y+4.5y-702-7.2=0
We add all the numbers together, and all the variables
8y-709.2=0
We move all terms containing y to the left, all other terms to the right
8y=709.2
y=709.2/8
y=88+4.33333333333/6.66666666667
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