7/c-2/c=4/c-1

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Solution for 7/c-2/c=4/c-1 equation: 


D( c )

c = 0

c = 0

c = 0

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

7/c-(2/c) = 4/c-1 // - 4/c-1

7/c-(2/c)-(4/c)+1 = 0

7/c-2*c^-1-4*c^-1+1 = 0

1*c^-1 = -1 // : 1

c^-1 = -1

-1 < 0

1/(c^1) = -1 // * c^1

1 = -1*c^1 // : -1

-1 = c^1

c = -1

c = -1

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