4n+21+2n+15=180

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Solution for 4n+21+2n+15=180 equation: 



4n+21+2n+15=180

We move all terms to the left:

4n+21+2n+15-(180)=0

We add all the numbers together, and all the variables

6n-144=0

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

6n=144

n=144/6

n=24

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