五点二减一又五分之三除以零点375乘五分之四加八分之一乘零点八
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解决时间 2021-02-16 10:32
- 提问者网友：心牵心
- 2021-02-15 15:06
五点二减一又五分之三除以零点375乘五分之四加八分之一乘零点八
最佳答案
- 五星知识达人网友：夜余生
- 2021-02-15 16:41
解:5.2-1又3/5÷0.375*4/5+1/8*0.8
=26/5-8/5÷3/8*4/5+1/8*4/5
=26/5-8/5*8/3*4/5+1/10
=26/5-256/75+1/10
=(390-256)/75+1/10
=134/75+1/10
=(268+15)150
=283/150
追问(0.375乘五分之四+八分一乘0.8)追答先算括号内
(0.375乘五分之四+八分一乘0.8)
=3/8*4/5+1/8*4/5
=3/10+1/10
=4/10
=2/5
原式=5.2-8/5÷2/5
=5.2-8/5*5/2
=5.2-4
=1.2追问能不能弄在一起追答解: 5.2-1又3/5÷(0.375*4/5+1/8*0.8)
=5.2-8/5÷( 3/8*4/5+1/8* 4/5)
=5.2-8/5÷( 3/10+1/10)
=5.2-8/5÷4/10
=5.2-8/5*5/2
=5.2-4
=1.2
=26/5-8/5÷3/8*4/5+1/8*4/5
=26/5-8/5*8/3*4/5+1/10
=26/5-256/75+1/10
=(390-256)/75+1/10
=134/75+1/10
=(268+15)150
=283/150
追问(0.375乘五分之四+八分一乘0.8)追答先算括号内
(0.375乘五分之四+八分一乘0.8)
=3/8*4/5+1/8*4/5
=3/10+1/10
=4/10
=2/5
原式=5.2-8/5÷2/5
=5.2-8/5*5/2
=5.2-4
=1.2追问能不能弄在一起追答解: 5.2-1又3/5÷(0.375*4/5+1/8*0.8)
=5.2-8/5÷( 3/8*4/5+1/8* 4/5)
=5.2-8/5÷( 3/10+1/10)
=5.2-8/5÷4/10
=5.2-8/5*5/2
=5.2-4
=1.2
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