3(n+7)-3n=-3n+30

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Solution for 3(n+7)-3n=-3n+30 equation: 



3(n+7)-3n=-3n+30

We move all terms to the left:

3(n+7)-3n-(-3n+30)=0

We add all the numbers together, and all the variables

-3n+3(n+7)-(-3n+30)=0

We multiply parentheses

-3n+3n-(-3n+30)+21=0

We get rid of parentheses

-3n+3n+3n-30+21=0

We add all the numbers together, and all the variables

3n-9=0

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

3n=9

n=9/3

n=3

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