梓卫
幼苗
共回答了21个问题采纳率:100% 举报
1/3×5×2/5÷1/3
=(1/3×3/1)×(5×2/5)
=1×2
=2
3/4-5/8×3/4
=3/4×(1-5/8)
=3/4×3/8
=9/32
(4/5-2/3)×15/8
=4/5×15/8-2/3×15/8
=3/2-5/4
=1/4
5/7+3/5÷1/2
=5/7+3/5×2
=5/7+6/5
=67/35
(5/12+5/24)÷5/48
=5/12×48/5+5/24×48/5
=4+2
=6
(1-3/8)÷(5/6×1/2)
=5/8×12/5
=3/2
1年前
5