-1=1/2n+9

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



-1=1/2n+9

We move all terms to the left:

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



Domain of the equation: 2n+9)!=0

n∈R



We get rid of parentheses

-1/2n-9-1=0

We multiply all the terms by the denominator


-9*2n-1*2n-1=0

Wy multiply elements

-18n-2n-1=0

We add all the numbers together, and all the variables

-20n-1=0

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

-20n=1

n=1/-20

n=-1/20

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