13+5y=21

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Solution for 13+5y=21 equation: 



13+5y=21

We move all terms to the left:

13+5y-(21)=0

We add all the numbers together, and all the variables

5y-8=0

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

5y=8

y=8/5

y=1+3/5

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