-4(3+3n)=-3(3n-7)

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Solution for -4(3+3n)=-3(3n-7) equation: 



-4(3+3n)=-3(3n-7)

We move all terms to the left:

-4(3+3n)-(-3(3n-7))=0

We add all the numbers together, and all the variables

-4(3n+3)-(-3(3n-7))=0

We multiply parentheses

-12n-(-3(3n-7))-12=0



We calculate terms in parentheses: -(-3(3n-7)), so:

-3(3n-7)

We multiply parentheses

-9n+21

Back to the equation:

-(-9n+21)



We get rid of parentheses

-12n+9n-21-12=0

We add all the numbers together, and all the variables

-3n-33=0

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

-3n=33

n=33/-3

n=-11

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