10/a=20/28

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Solution for 10/a=20/28 equation: 


D( a )

a = 0

a = 0

a = 0

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

10/a = 20/28 // - 20/28

10/a-(20/28) = 0

10/a-5/7 = 0

10*a^-1 = 5/7 // : 10

a^-1 = 1/14

-1 < 0

1/(a^1) = 1/14 // * a^1

1 = 1/14*a^1 // : 1/14

14 = a^1

a = 14

a = 14

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