-40=12n+9

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Solution for -40=12n+9 equation: 



-40=12n+9

We move all terms to the left:

-40-(12n+9)=0

We get rid of parentheses

-12n-9-40=0

We add all the numbers together, and all the variables

-12n-49=0

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

-12n=49

n=49/-12

n=-4+1/12

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