1-1/2k-2/7k=-4/7

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


k in (-oo:+oo)

1-((1/2)*k)-((2/7)*k) = -4/7 // + -4/7

1-((1/2)*k)-((2/7)*k)-(-4/7) = 0

(-1/2)*k+(-2/7)*k+4/7+1 = 0

11/7-11/14*k = 0 // - 11/7

-11/14*k = -11/7 // : -11/14

k = -11/7/(-11/14)

k = 2

k = 2

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