9-2y=2y=21

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Solution for 9-2y=2y=21 equation: 



9-2y=2y=21

We move all terms to the left:

9-2y-(2y)=0

We add all the numbers together, and all the variables

-4y+9=0

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

-4y=-9

y=-9/-4

y=2+1/4

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