1/5k-4/7=1/7

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Solution for 1/5k-4/7=1/7 equation: 


k in (-oo:+oo)

(1/5)*k-(4/7) = 1/7 // - 1/7

(1/5)*k-(4/7)-(1/7) = 0

(1/5)*k-4/7-1/7 = 0

1/5*k-5/7 = 0 // + 5/7

1/5*k = 5/7 // : 1/5

k = 5/7/1/5

k = 25/7

k = 25/7

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