2=7/a

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Solution for 2=7/a equation: 


D( a )

a = 0

a = 0

a = 0

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

2 = 7/a // - 7/a

2-(7/a) = 0

2-7*a^-1 = 0

-7*a^-1 = -2 // : -7

a^-1 = 2/7

-1 < 0

1/(a^1) = 2/7 // * a^1

1 = 2/7*a^1 // : 2/7

7/2 = a^1

a = 7/2

a = 7/2

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