28/9=5/c

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Solution for 28/9=5/c equation: 


D( c )

c = 0

c = 0

c = 0

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

28/9 = 5/c // - 5/c

28/9-(5/c) = 0

28/9-5*c^-1 = 0

-5*c^-1 = -28/9 // : -5

c^-1 = 28/45

-1 < 0

1/(c^1) = 28/45 // * c^1

1 = 28/45*c^1 // : 28/45

45/28 = c^1

c = 45/28

c = 45/28

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