-18y+9y=72

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Solution for -18y+9y=72 equation: 



-18y+9y=72

We move all terms to the left:

-18y+9y-(72)=0

We add all the numbers together, and all the variables

-9y-72=0

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

-9y=72

y=72/-9

y=-8

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