8/9=4/a

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Solution for 8/9=4/a equation: 


D( a )

a = 0

a = 0

a = 0

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

8/9 = 4/a // - 4/a

8/9-(4/a) = 0

8/9-4*a^-1 = 0

-4*a^-1 = -8/9 // : -4

a^-1 = 2/9

-1 < 0

1/(a^1) = 2/9 // * a^1

1 = 2/9*a^1 // : 2/9

9/2 = a^1

a = 9/2

a = 9/2

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