12n+20=9(-5+n)-2n

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Solution for 12n+20=9(-5+n)-2n equation: 



12n+20=9(-5+n)-2n

We move all terms to the left:

12n+20-(9(-5+n)-2n)=0

We add all the numbers together, and all the variables

12n-(9(n-5)-2n)+20=0



We calculate terms in parentheses: -(9(n-5)-2n), so:

9(n-5)-2n

We add all the numbers together, and all the variables

-2n+9(n-5)

We multiply parentheses

-2n+9n-45

We add all the numbers together, and all the variables

7n-45

Back to the equation:

-(7n-45)



We get rid of parentheses

12n-7n+45+20=0

We add all the numbers together, and all the variables

5n+65=0

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

5n=-65

n=-65/5

n=-13

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