9=5-2n

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Solution for 9=5-2n equation: 



9=5-2n

We move all terms to the left:

9-(5-2n)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

2n-5+9=0

We add all the numbers together, and all the variables

2n+4=0

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

2n=-4

n=-4/2

n=-2

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