更新1: 1.make k the subject of the formulae 5/h-10=1/5-k 1. Make k be the subject of the formulae 5/h-10=1/5-k A. (5/h)-10 = 1/(5-k) [k] 5-10h = h/(5-k) (5-10h)(5-k) = h 25-5k-50h+10 = h 5k(2h-1) = 51h-25 k = (51h-25)/[5...
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