18.559/5-11.869/4的简便算法

李擒时2022-10-04 11:39:542条回答

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三秋桂子共回答了17个问题 | 采纳率88.2%: 18.5*59/5-11.8*69/4 = 18.5*59* 4/（5*4）-11.8*69*5/（4*5)
= (18.5*4)*59/20 - (11.8*5)*69/20
= 74*59/20 - 59*69/20
= (74*59 - 59*69)/20
= 59*(74-69)/20
= 59 * 5/20
= 59/4 = 14.75; 1年前

茄子开花21 共回答了3017个问题 | 采纳率: 18.5*59/5-11.8*69/4
=(18.5*59/5-11.8*69/4)×20÷20
=(18.5*59*4-11.8*69*5)÷20
=(74*59-59*69)÷20
=59*(74-69)÷20
=59*5÷20
=295÷20
=14.75; 1年前

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