-4(3n-9)=40

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Solution for -4(3n-9)=40 equation: 



-4(3n-9)=40

We move all terms to the left:

-4(3n-9)-(40)=0

We multiply parentheses

-12n+36-40=0

We add all the numbers together, and all the variables

-12n-4=0

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

-12n=4

n=4/-12

n=-1/3

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