9+3(5n-12)=18

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Solution for 9+3(5n-12)=18 equation: 



9+3(5n-12)=18

We move all terms to the left:

9+3(5n-12)-(18)=0

We add all the numbers together, and all the variables

3(5n-12)-9=0

We multiply parentheses

15n-36-9=0

We add all the numbers together, and all the variables

15n-45=0

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

15n=45

n=45/15

n=3

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