45=42n+9

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Solution for 45=42n+9 equation: 



45=42n+9

We move all terms to the left:

45-(42n+9)=0

We get rid of parentheses

-42n-9+45=0

We add all the numbers together, and all the variables

-42n+36=0

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

-42n=-36

n=-36/-42

n=6/7

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