12-8y=-9

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Solution for 12-8y=-9 equation: 



12-8y=-9

We move all terms to the left:

12-8y-(-9)=0

We add all the numbers together, and all the variables

-8y+21=0

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

-8y=-21

y=-21/-8

y=2+5/8

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