5n-20=7n-80

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Solution for 5n-20=7n-80 equation: 



5n-20=7n-80

We move all terms to the left:

5n-20-(7n-80)=0

We get rid of parentheses

5n-7n+80-20=0

We add all the numbers together, and all the variables

-2n+60=0

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

-2n=-60

n=-60/-2

n=+30

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