7/9=8/c

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Solution for 7/9=8/c equation: 


D( c )

c = 0

c = 0

c = 0

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

7/9 = 8/c // - 8/c

7/9-(8/c) = 0

7/9-8*c^-1 = 0

-8*c^-1 = -7/9 // : -8

c^-1 = 7/72

-1 < 0

1/(c^1) = 7/72 // * c^1

1 = 7/72*c^1 // : 7/72

72/7 = c^1

c = 72/7

c = 72/7

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