-9y+9=90

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Solution for -9y+9=90 equation: 



-9y+9=90

We move all terms to the left:

-9y+9-(90)=0

We add all the numbers together, and all the variables

-9y-81=0

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

-9y=81

y=81/-9

y=-9

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