3(n-4)=30

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Solution for 3(n-4)=30 equation: 



3(n-4)=30

We move all terms to the left:

3(n-4)-(30)=0

We multiply parentheses

3n-12-30=0

We add all the numbers together, and all the variables

3n-42=0

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

3n=42

n=42/3

n=14

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