90n-n=180

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Solution for 90n-n=180 equation: 



90n-n=180

We move all terms to the left:

90n-n-(180)=0

We add all the numbers together, and all the variables

89n-180=0

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

89n=180

n=180/89

n=2+2/89

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