7(7n-3)+8n=21

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Solution for 7(7n-3)+8n=21 equation: 



7(7n-3)+8n=21

We move all terms to the left:

7(7n-3)+8n-(21)=0

We add all the numbers together, and all the variables

8n+7(7n-3)-21=0

We multiply parentheses

8n+49n-21-21=0

We add all the numbers together, and all the variables

57n-42=0

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

57n=42

n=42/57

n=14/19

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