21+5y=31

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Solution for 21+5y=31 equation: 



21+5y=31

We move all terms to the left:

21+5y-(31)=0

We add all the numbers together, and all the variables

5y-10=0

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

5y=10

y=10/5

y=2

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