21+2y+7+90=180

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Solution for 21+2y+7+90=180 equation: 



21+2y+7+90=180

We move all terms to the left:

21+2y+7+90-(180)=0

We add all the numbers together, and all the variables

2y-62=0

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

2y=62

y=62/2

y=31

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