12n=135+4.50n

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Solution for 12n=135+4.50n equation: 



12n=135+4.50n

We move all terms to the left:

12n-(135+4.50n)=0

We add all the numbers together, and all the variables

12n-(4.50n+135)=0

We get rid of parentheses

12n-4.50n-135=0

We add all the numbers together, and all the variables

7.5n-135=0

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

7.5n=135

n=135/7.5

n=18

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