9-7y=30

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Solution for 9-7y=30 equation: 



9-7y=30

We move all terms to the left:

9-7y-(30)=0

We add all the numbers together, and all the variables

-7y-21=0

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

-7y=21

y=21/-7

y=-3

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