`9/14-3/7`
`=9/14-6/14`
`=3/14`
` 6/8xx4/5`
`=3/4xx4/5`
`=3/5`
`6/4:7/5`
`=6/4xx5/7`
`=3/2xx5/7`
`=15/14`
`9/14-3/7`
`=9/14-6/14`
`=3/14`
` 6/8xx4/5`
`=3/4xx4/5`
`=3/5`
`6/4:7/5`
`=6/4xx5/7`
`=3/2xx5/7`
`=15/14`
1/2+2/3+3/4+4/5+5/6+6/7+7/8+8/9+9/10+10/11+11/12+12/13+13/14+14/15=?
{ < , >, = }
5/6......11/12 4/7.......3/4 5/8..........3/8
10/14.....5/7 10/9 .......10/11 8/15...........8/9
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4
tính giá trị biểu thức
[a] 1/3-2/15+14/15
[b] 3/5 +4-6/7
[c] 1/7+2/9+3/10+7/9+6/7+7/10
[d]3/4+5/8-5/6
mình cần gấp,các bạn trả lời nhanh giúp mình với ạ
Điền dấu:
4/15........4/13 7/6........8/9 14/11......14/19 5/6.........3/4
giúp mình với
y x 18/5 - y x 3/5 =...
4/6 + 7/13 + 17/9 + 19/13 - 8/9 + 14/6
tính theo mẫu :
Mẫu : ( 5 / 8 x 3 / 4 ) x 4 / 5 = 5 / 8 x ( 3 / 4 x 4 / 5 ) = 5 / 8 x 3 / 5 = 3 / 8
a) ( 4 / 9 x 3 / 7 ) x 7 / 4
b) ( 6 / 5 x 4 / 5 ) x 25 / 16
c) ( 7 / 8 x 16 / 9 ) x 3 / 14
tính theo mẫu :
Mẫu : ( 5 / 8 x 3 / 4 ) x 4 / 5 = 5 / 8 x ( 3 / 4 x 4 / 5 ) = 5 / 8 x 3 / 5 = 3 / 8
a) ( 4 / 9 x 3 / 7 ) x 7 / 4
b) ( 6 / 5 x 4 / 5 ) x 25 / 16
c) ( 7 / 8 x 16 / 9 ) x 3 / 14
(4/9 x 3/7) x 7/4 (6/5x4/5)x 25/16 (7/8 x 16/9)x3/14
Giúp em