3n+18+2n+12=180

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Solution for 3n+18+2n+12=180 equation: 



3n+18+2n+12=180

We move all terms to the left:

3n+18+2n+12-(180)=0

We add all the numbers together, and all the variables

5n-150=0

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

5n=150

n=150/5

n=30

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