(5/2-1/a)/(8/2a)

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Solution for (5/2-1/a)/(8/2a) equation: 


D( a )

a = 0

(8/2)*a = 0

a = 0

a = 0

(8/2)*a = 0

(8/2)*a = 0

4*a = 0 // : 4

a = 0

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

(5/2-(1/a))/((8/2)*a) = 0

(5/2-a^-1)/((8/2)*a) = 0

(5/2-a^-1)/(4*a) = 0

-1*a^-1 = -5/2 // : -1

a^-1 = 5/2

-1 < 0

1/(a^1) = 5/2 // * a^1

1 = 5/2*a^1 // : 5/2

2/5 = a^1

a = 2/5

a = 2/5

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