(三分之二+五分之二×四分之三)÷5 简算?
展开全部
(三分之二 + 五分之二 × 四分之三)÷ 5
= (2/3 + 2/5 × 3/4)÷ 5
= (2/3 + 2/5 × 3/4)× 1/5
= 2/3 × 1/5 + 2/5 × 3/4 × 1/5
= 2/5 × 1/3 + 2/5 × (3/4 × 1/5)
= 2/5 × 1/3 + 2/5 × 3/20
= 2/5 ×(1/3 + 3/20)
= 2/5 ×(20/60 + 9/60)
= 2/5 × 29/60
= 29/150,9,
= (2/3 + 2/5 × 3/4)÷ 5
= (2/3 + 2/5 × 3/4)× 1/5
= 2/3 × 1/5 + 2/5 × 3/4 × 1/5
= 2/5 × 1/3 + 2/5 × (3/4 × 1/5)
= 2/5 × 1/3 + 2/5 × 3/20
= 2/5 ×(1/3 + 3/20)
= 2/5 ×(20/60 + 9/60)
= 2/5 × 29/60
= 29/150,9,
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询