2/a-5/-a

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Solution for 2/a-5/-a equation: 


D( a )

-a = 0

a = 0

-a = 0

a = 0

a = 0

a = 0

a in (-oo:0) U (0:+oo)

2/a-(5/(-a)) = 0

2/a+5*a^-1 = 0

7*a^-1 = 0 // : 7

a^-1 = 0

a naleu017Cy do O

a belongs to the empty set

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