7(3-n)+3n=-2n+9

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Solution for 7(3-n)+3n=-2n+9 equation: 



7(3-n)+3n=-2n+9

We move all terms to the left:

7(3-n)+3n-(-2n+9)=0

We add all the numbers together, and all the variables

7(-1n+3)+3n-(-2n+9)=0

We add all the numbers together, and all the variables

3n+7(-1n+3)-(-2n+9)=0

We multiply parentheses

3n-7n-(-2n+9)+21=0

We get rid of parentheses

3n-7n+2n-9+21=0

We add all the numbers together, and all the variables

-2n+12=0

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

-2n=-12

n=-12/-2

n=+6

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