3/4=7/a

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Solution for 3/4=7/a equation: 


D( a )

a = 0

a = 0

a = 0

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

3/4 = 7/a // - 7/a

3/4-(7/a) = 0

3/4-7*a^-1 = 0

-7*a^-1 = -3/4 // : -7

a^-1 = 3/28

-1 < 0

1/(a^1) = 3/28 // * a^1

1 = 3/28*a^1 // : 3/28

28/3 = a^1

a = 28/3

a = 28/3

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