(3n-60)+(3n+20)=440

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Solution for (3n-60)+(3n+20)=440 equation: 



(3n-60)+(3n+20)=440

We move all terms to the left:

(3n-60)+(3n+20)-(440)=0

We get rid of parentheses

3n+3n-60+20-440=0

We add all the numbers together, and all the variables

6n-480=0

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

6n=480

n=480/6

n=80

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