15+21y-1=180

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Solution for 15+21y-1=180 equation: 



15+21y-1=180

We move all terms to the left:

15+21y-1-(180)=0

We add all the numbers together, and all the variables

21y-166=0

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

21y=166

y=166/21

y=7+19/21

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