简便计算。快,在线等。
(1)7又1/5除以0.24-2又2/7*0.875(2)【2又1/3+(5.4-3又2/3)*1又2/3】除以3又4/9...
(1)7又1/5除以0.24-2又2/7*0.875(2)【2又1/3+(5.4-3又2/3)*1又2/3】除以3又4/9
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(1)7又(1/5)/0.24-2又(2/7)*0.875
=(36/5)/(24/100)-(16/7)*(875/1000)
=(36/5)*(100/24)-(16*125)/1000
=80/3-2000/1000
=80/3-6/3
=74/3
=24又(2/3)
(2)【2又(1/3)+(5.4-3又(2/3))*1又(2/3)】/(3又(4/9))
=【(7/3)+(5.4-(11/3))*(5/3)】/(31/9)
=【(7/3)+((27/5)-(11/3))*(5/3)】/(31/9)
=【(7/3)+(9-(55/9))】/(31/9)
=【(7/3)+((81/9)-(55/9))】/(31/9)
=【(7/3)+(26/9)】*(9/31)
=(21/31)+(26/31)
=(47/31)
=1又(16/31)
=(36/5)/(24/100)-(16/7)*(875/1000)
=(36/5)*(100/24)-(16*125)/1000
=80/3-2000/1000
=80/3-6/3
=74/3
=24又(2/3)
(2)【2又(1/3)+(5.4-3又(2/3))*1又(2/3)】/(3又(4/9))
=【(7/3)+(5.4-(11/3))*(5/3)】/(31/9)
=【(7/3)+((27/5)-(11/3))*(5/3)】/(31/9)
=【(7/3)+(9-(55/9))】/(31/9)
=【(7/3)+((81/9)-(55/9))】/(31/9)
=【(7/3)+(26/9)】*(9/31)
=(21/31)+(26/31)
=(47/31)
=1又(16/31)
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