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15/4分之5/7分之8 25-5分之12/25分之6 (7分之8+3分之1)/4分之3 (5分之3-15分之2)/(1

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/02 04:23:03
15/4分之5/7分之8 25-5分之12/25分之6 (7分之8+3分之1)/4分之3 (5分之3-15分之2)/(12分之1+6分之5)
17分之12/3*5分之4 (24分之7+12分之7)*21分之4 (24分之5+24分之5)/48分之5 15分之2/(1-7分之2) 3分之1*15*2分之1 10分之7*16分之5/32分之31 4分之1/6分之1/5分之2 4分之3/5分之3/6分之5 10/7分之3*7分之6 13分之2/9分之4/8分之1 6分之1*7分之6/5分之3 9分之5*10分之3/2分之1 8分之5/5*7分之4 谢谢了 10000%采纳 只要在今晚给答案的 100000%采纳 有过程
15/4分之5/7分之8
=15/(5/4)/(8/7)
=15×4/5×7/8
=21/10
25-5分之12/25分之6
=25-(12/5)/(6/25)
=25-12/5×25/6
=25-10
=15
(7分之8+3分之1)/4分之3
=(8/7+1/3)/(3/4)
=(8/7+1/3)×4/3
=(24/21+7/21)×4/3
=31/21×4/3
=124/63
(5分之3-15分之2)/(12分之1+6分之5)
=(3/5-2/15)/(1/12+5/6)
=(9/15-2/15)/(1/12+10/12)
=(7/15)/(11/12)
=7/15×12/11
=28/55
17分之12/3*5分之4
=(12/17)/3×4/5
=12/17×1/3×4/5
=16/85
(24分之7+12分之7)*21分之4
=(7/24+7/12)×4/21
=(7/24+14/24)×4/21
=21/24×4/21
=1/6
(24分之5+24分之5)/48分之5
=(5/24+5/24)/(5/48)
=10/24×48/5
=4
15分之2/(1-7分之2)
=(2/15)/(1-2/7)
=(2/15)/(5/7)
=2/15×7/5
=14/75
3分之1*15*2分之1
=1/3×15×1/2
=5×1/2
=5/2
10分之7*16分之5/32分之31
=7/10×(5/16)/(31/32)
=7/10×5/16×32/31
=7/31
4分之1/6分之1/5分之2
=(1/4)/(1/6)/(2/5)
=1/4×6×5/2
=15/2
4分之3/5分之/3/6分之5
=(3/4)/(3/5)/(5/6)
=3/4×5/3×6/5
=3/2
10/7分之3*7分之6
=10/(3/7)×6/7
=10×7/3×6/7
=20
13分之2/9分之4/8分之1
=(2/13)/(4/9)/(1/8)
=2/13×9/4×8
=36/13
6分之1*7分之6/5分之3
=1/6×6/7/(3/5)
=1/6×6/7×5/3
=5/21
9分之5*10分之3/2分之1
=5/9×3/10/(1/2)
=5/9×3/10×2
=1/3
8分之5/5*7分之4
=(5/8)/5×4/7
=5/8×1/5×4/7
=1/14