2y-9;y=20

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Solution for 2y-9;y=20 equation: 



2y-9y=20

We move all terms to the left:

2y-9y-(20)=0

We add all the numbers together, and all the variables

-7y-20=0

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

-7y=20

y=20/-7

y=-2+6/7

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