3n+15+4n+39=180

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Solution for 3n+15+4n+39=180 equation: 



3n+15+4n+39=180

We move all terms to the left:

3n+15+4n+39-(180)=0

We add all the numbers together, and all the variables

7n-126=0

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

7n=126

n=126/7

n=18

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