-7(-3n+3)=-21+21

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Solution for -7(-3n+3)=-21+21 equation: 



-7(-3n+3)=-21+21

We move all terms to the left:

-7(-3n+3)-(-21+21)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-7(-3n+3)=0

We multiply parentheses

21n-21=0

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

21n=21

n=21/21

n=1

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