21-2y+5y=45

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Solution for 21-2y+5y=45 equation: 



21-2y+5y=45

We move all terms to the left:

21-2y+5y-(45)=0

We add all the numbers together, and all the variables

3y-24=0

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

3y=24

y=24/3

y=8

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