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13=-3.2+y
We move all terms to the left:
13-(-3.2+y)=0
We add all the numbers together, and all the variables
-(y-3.2)+13=0
We get rid of parentheses
-y+3.2+13=0
We add all the numbers together, and all the variables
-1y+16.2=0
We move all terms containing y to the left, all other terms to the right
-y=-16.2
y=-16.2/-1
y=16+0.2/1
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