20/a=80

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Solution for 20/a=80 equation: 


D( a )

a = 0

a = 0

a = 0

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

20/a = 80 // - 80

20/a-80 = 0

20*a^-1 = 80 // : 20

a^-1 = 4

-1 < 0

1/(a^1) = 4 // * a^1

1 = 4*a^1 // : 4

1/4 = a^1

a = 1/4

a = 1/4

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