77=3n-13

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Solution for 77=3n-13 equation: 



77=3n-13

We move all terms to the left:

77-(3n-13)=0

We get rid of parentheses

-3n+13+77=0

We add all the numbers together, and all the variables

-3n+90=0

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

-3n=-90

n=-90/-3

n=+30

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