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7.91=2.3+y
We move all terms to the left:
7.91-(2.3+y)=0
We add all the numbers together, and all the variables
-(y+2.3)+7.91=0
We get rid of parentheses
-y-2.3+7.91=0
We add all the numbers together, and all the variables
-1y+5.61=0
We move all terms containing y to the left, all other terms to the right
-y=-5.61
y=-5.61/-1
y=5+0.61/1
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