21+2y=30

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Solution for 21+2y=30 equation: 



21+2y=30

We move all terms to the left:

21+2y-(30)=0

We add all the numbers together, and all the variables

2y-9=0

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

2y=9

y=9/2

y=4+1/2

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