42+3y=87

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Solution for 42+3y=87 equation: 



42+3y=87

We move all terms to the left:

42+3y-(87)=0

We add all the numbers together, and all the variables

3y-45=0

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

3y=45

y=45/3

y=15

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