在植树活动中,六年级植树棵数比五年级的2倍少10棵,五年级比六年级少62棵.两个年级各植树多少棵?
人气:493 ℃ 时间:2019-08-20 01:57:56
解答
设六年级植树x棵,则五年级植树(x-62)棵,由题意得:[(x-62)×2-10]-x=0,[2x-124-10]-x=0, 2x-134-x=0, &n...
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