Inequation

Solve the inequation:

5k - (7k - 1)≤ 2/5 . (5-k)-2

Correct result:

k≥:  0.625

Solution:

5k(7k1)2/5.(5k)2 5k7k+122/5k2 2k+12/5k 58k 5/8k 0.625k



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