13y+21=73

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Solution for 13y+21=73 equation: 



13y+21=73

We move all terms to the left:

13y+21-(73)=0

We add all the numbers together, and all the variables

13y-52=0

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

13y=52

y=52/13

y=4

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