-3(2n-6)=-9n-21

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Solution for -3(2n-6)=-9n-21 equation: 



-3(2n-6)=-9n-21

We move all terms to the left:

-3(2n-6)-(-9n-21)=0

We multiply parentheses

-6n-(-9n-21)+18=0

We get rid of parentheses

-6n+9n+21+18=0

We add all the numbers together, and all the variables

3n+39=0

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

3n=-39

n=-39/3

n=-13

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