[1减(14加38)]除14(720减536)乘4减4934除6减16乘1413除(14加56)乘34[1减(38加14)]乘239815乘[56除(79减13)]怎么算?
[1减(14加38)]除14
(720减536)乘4减49
34除6减16乘14
13除(14加56)乘34
[1减(38加14)]乘239
815乘[56除(79减13)]
怎么算?
[1减(14加38)]除14(720减536)乘4减4934除6减16乘1413除(14加56)乘34[1减(38加14)]乘239815乘[56除(79减13)]怎么算?
[1减(14加38)]除14
(720减536)乘4减49
34除6减16乘14
13除(14加56)乘34
[1减(38加14)]乘239
815乘[56除(79减13)]
怎么算?
1.01/6+(5/6-3/4)/(2/5)=1/6+(20/24-18/24)/(2/5)
=1/6+(2/24)/(2/5)
=1/6+(2/24*5/2)
=1/6+5/24
=4/24+5/24=9/24=3/8
2.0(4/5*1/4)+(3.2*1/4)-(1/4)=(1/5)+(16/5*1/4)-(1/4)
=(1/5)+(4/5)-(1/4)
=1-(1/4)
=3/4
3.0[1-(1/4+3/8)]/(1/4)=[1-(2/8+3/8)]/(1/4)x05x05x05x05
=[1-5/8]/(1/4)x05x05x05x05
=(3/8)/(1/4)=(3/8)*4=3/2x05
4.0(7/20-5/36)*4-(4/9)=(7/20-5/36)*4-(4/9)
=(252/720-100/720)*4-(4/9)
=(152/720)*4-(4/9)
=152/180-(4/9)
=38/45-(4/9)=38/45-20/45=18/45=2/5
5.013/(1/4+5/6)*3/4=13/(6/24+20/24)*3/4x05x05x05x05x05
=13/(26/24)*3/4x05x05x05x05x05
=13/(26/32)=13*(32/26)=32/2=16
快点啊!!!你还有3道题你没写