(1/2){[(49/12)-(63/20)+(77/30)-(91/42)+(105/56)]-3又1/6}÷1/24 简便计算过程,
问题描述:
(1/2){[(49/12)-(63/20)+(77/30)-(91/42)+(105/56)]-3又1/6}÷1/24 简便计算过程,
答
原式=(3430/840-2640/840+2156/830-1820/840+1575/840-2660/840)*24
=41/840*24
=41/35