1/5+2/5k=k-7/40

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Solution for 1/5+2/5k=k-7/40 equation: 


k in (-oo:+oo)

(2/5)*k+1/5 = k-(7/40) // - k-(7/40)

(2/5)*k-k+1/5+7/40 = 0

3/8-3/5*k = 0 // - 3/8

-3/5*k = -3/8 // : -3/5

k = -3/8/(-3/5)

k = 5/8

k = 5/8

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