3/5÷6÷1/15 50×(3/10+1/5) 3/8×4/7÷3/8×4/7
2/7÷8+5/7×1/8 15÷9/25×4/5 ﹙13-3/10﹚÷3/5
是分数除法!!快!!越快越好!!
3/5÷6÷1/15
=3/5÷1/15÷6
=3/5x15÷6
=9÷6
=1.5
50Ãï¼3/10ï¼1/5ï¼
=50Ãï¼3/10ï¼2/10ï¼
=50Ã1/2
=25
3/8Ã4/7÷3/8Ã4/7
=3/8÷3/8Ã4/7Ã4/7
=1Ã4/7Ã4/7
=16/49
2/7÷8ï¼5/7Ã1/8
=2/7Ã1/8 ï¼5/7Ã1/8
=(2/7+5/7)Ã1/8
=1Ã1/8
=1/8
15÷9/25Ã4/5
=15Ã4/5÷9/25
=12x25/9
=100/3
ï¹13ï¼3/10ï¹Ã·3/5
=ï¹130ï¼3)/10x5/3
=127/10x5/3
=127/6