3(3n-1)-7(3+n)=4n-4n

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Solution for 3(3n-1)-7(3+n)=4n-4n equation: 



3(3n-1)-7(3+n)=4n-4n

We move all terms to the left:

3(3n-1)-7(3+n)-(4n-4n)=0

We add all the numbers together, and all the variables

3(3n-1)-7(n+3)-0=0

We add all the numbers together, and all the variables

3(3n-1)-7(n+3)=0

We multiply parentheses

9n-7n-3-21=0

We add all the numbers together, and all the variables

2n-24=0

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

2n=24

n=24/2

n=12

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