72=0.9y

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Solution for 72=0.9y equation: 



72=0.9y

We move all terms to the left:

72-(0.9y)=0

We add all the numbers together, and all the variables

-(+0.9y)+72=0

We get rid of parentheses

-0.9y+72=0

We move all terms containing y to the left, all other terms to the right

-0.9y=-72

y=-72/-0.9

y=+80

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