缪司的ff
幼苗
共回答了16个问题采纳率:87.5% 举报
(1)(2.65-1[1/4])÷[(4.5− 3
1
3)×0.48]
=[7/5]÷[[7/6]×[12/25]]
=[7/5]×[25/14]
=[5/2];
(2)27.27-3.8×2.4+3.18÷0.12(1)
=27.27-9.12+26.5
=18.15+26.5
=44.65;
(3)(1[3/8]+2[2/5]+ 2
5
8)÷(1-[3/35])
=(1[15/40]+ 2
16
40+2[25/40])×[35/32]
=[256/40]×[35/32]
=7;
(4)[67.5÷(1
4
5−1.35)-144[3/4]]×1
3
7
=[[135/2]÷ 1
80
73-144[3/4]]×[10/7]
=[32
7
34-144
3
4]×[10/7]
=−
7653
68×
10
7
1年前
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