3n+40+n=180

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Solution for 3n+40+n=180 equation: 



3n+40+n=180

We move all terms to the left:

3n+40+n-(180)=0

We add all the numbers together, and all the variables

4n-140=0

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

4n=140

n=140/4

n=35

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