冰冷的泪
幼苗
共回答了13个问题采纳率:92.3% 举报
3分之7÷7分之4加3分之7×3分之7,
=7/3×7/4+7/3×7/3
=7/3×(7/4+7/3)
=7/3×49/12
=343/36
6÷(32+23),
=6÷13/6
=36/13
8/13÷6+1/6×4/13,
=(8/13+4/13)×1/6
=12/13×1/6
=2/13
2÷4/5-3/4,
=8/5-3/4
=17/20
(4-0.5)÷7/20
=3.5×20/7
=10
48×(1/8+3/16+5/24)
=48×1/8+48×3/16+48×5/24
=6+9+10
=25
1年前
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