-2n=-9

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Solution for -2n=-9 equation: 



-2n=-9

We move all terms to the left:

-2n-(-9)=0

We add all the numbers together, and all the variables

-2n+9=0

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

-2n=-9

n=-9/-2

n=4+1/2

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