3n-20=40

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Solution for 3n-20=40 equation: 



3n-20=40

We move all terms to the left:

3n-20-(40)=0

We add all the numbers together, and all the variables

3n-60=0

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

3n=60

n=60/3

n=20

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