42+87+3y=180

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Solution for 42+87+3y=180 equation: 



42+87+3y=180

We move all terms to the left:

42+87+3y-(180)=0

We add all the numbers together, and all the variables

3y-51=0

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

3y=51

y=51/3

y=17

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