21n+9(7+n)=183

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Solution for 21n+9(7+n)=183 equation: 



21n+9(7+n)=183

We move all terms to the left:

21n+9(7+n)-(183)=0

We add all the numbers together, and all the variables

21n+9(n+7)-183=0

We multiply parentheses

21n+9n+63-183=0

We add all the numbers together, and all the variables

30n-120=0

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

30n=120

n=120/30

n=4

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