2/7=10/k

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Solution for 2/7=10/k equation: 


D( k )

k = 0

k = 0

k = 0

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

2/7 = 10/k // - 10/k

2/7-(10/k) = 0

2/7-10*k^-1 = 0

-10*k^-1 = -2/7 // : -10

k^-1 = 1/35

-1 < 0

1/(k^1) = 1/35 // * k^1

1 = 1/35*k^1 // : 1/35

35 = k^1

k = 35

k = 35

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