2n-1=-9-2n

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Solution for 2n-1=-9-2n equation: 



2n-1=-9-2n

We move all terms to the left:

2n-1-(-9-2n)=0

We add all the numbers together, and all the variables

2n-(-2n-9)-1=0

We get rid of parentheses

2n+2n+9-1=0

We add all the numbers together, and all the variables

4n+8=0

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

4n=-8

n=-8/4

n=-2

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