-3(-5n-3)=-21

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Solution for -3(-5n-3)=-21 equation: 



-3(-5n-3)=-21

We move all terms to the left:

-3(-5n-3)-(-21)=0

We add all the numbers together, and all the variables

-3(-5n-3)+21=0

We multiply parentheses

15n+9+21=0

We add all the numbers together, and all the variables

15n+30=0

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

15n=-30

n=-30/15

n=-2

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