2/a+9=-1

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



2/a+9=-1

We move all terms to the left:

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



Domain of the equation: a!=0

a∈R



We add all the numbers together, and all the variables

2/a+10=0

We multiply all the terms by the denominator


10*a+2=0

We add all the numbers together, and all the variables

10a+2=0

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

10a=-2

a=-2/10

a=-1/5

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