5×十七分之二×3×二十八分之一
=10/17×3/28
=15/238
(六分之五加15%)×24
= 5/6×24+15%×24
=20+3.6
=23.6
(1-75%)÷(1+四分之一)
=1/4÷5/4
=1/5
回答完毕
5×十七分之二×3×二十八分之一
=10/17x3/28
=15/238
(六分之五加15%)×24
=5/6x24+3/20x24
=20+18/5
=23.6
(1-75%)÷(1+四分之一)
=1/4÷5/4
=1/5
5×2/17×3×1/28
=(5×3×2)/(17×14×2)
=(5×3)/(17×14)
=15/238
(5/6+15%)×24
=5/6×24+3/20×24
=20+36/10
=23.6
(1-75%)÷(1+1/4)
=25%÷5/4
=1/4×4/5
=1/5