-3(7n+3)+6n=-129

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Solution for -3(7n+3)+6n=-129 equation: 



-3(7n+3)+6n=-129

We move all terms to the left:

-3(7n+3)+6n-(-129)=0

We add all the numbers together, and all the variables

6n-3(7n+3)+129=0

We multiply parentheses

6n-21n-9+129=0

We add all the numbers together, and all the variables

-15n+120=0

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

-15n=-120

n=-120/-15

n=+8

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