3y+9=72

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Solution for 3y+9=72 equation: 



3y+9=72

We move all terms to the left:

3y+9-(72)=0

We add all the numbers together, and all the variables

3y-63=0

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

3y=63

y=63/3

y=21

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