7(3n-4)=77

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Solution for 7(3n-4)=77 equation: 



7(3n-4)=77

We move all terms to the left:

7(3n-4)-(77)=0

We multiply parentheses

21n-28-77=0

We add all the numbers together, and all the variables

21n-105=0

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

21n=105

n=105/21

n=5

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