-2(3n-4)=20

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Solution for -2(3n-4)=20 equation: 



-2(3n-4)=20

We move all terms to the left:

-2(3n-4)-(20)=0

We multiply parentheses

-6n+8-20=0

We add all the numbers together, and all the variables

-6n-12=0

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

-6n=12

n=12/-6

n=-2

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