9/11=4/a

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Solution for 9/11=4/a equation: 


D( a )

a = 0

a = 0

a = 0

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

9/11 = 4/a // - 4/a

9/11-(4/a) = 0

9/11-4*a^-1 = 0

-4*a^-1 = -9/11 // : -4

a^-1 = 9/44

-1 < 0

1/(a^1) = 9/44 // * a^1

1 = 9/44*a^1 // : 9/44

44/9 = a^1

a = 44/9

a = 44/9

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