80/a=2

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Solution for 80/a=2 equation: 


D( a )

a = 0

a = 0

a = 0

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

80/a = 2 // - 2

80/a-2 = 0

80*a^-1 = 2 // : 80

a^-1 = 1/40

-1 < 0

1/(a^1) = 1/40 // * a^1

1 = 1/40*a^1 // : 1/40

40 = a^1

a = 40

a = 40

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