Question

有简算就要简算，求大神帮帮忙，

Answer 1

1、原式
=1/63x63x2/5
=1x2/5
=2/5

2、原式
=5/9x36+3/4x36
=5x4+3x9
=20+27
=47

3、原式
=7/18x2/3-(3/18+4/18)
=7/18x2/3-7/18
=7/18x(2/3-1)
=7/18x(-1/3)
=-7/54

4、原式
=（65+1）x4/11
=66x4/11
=6x4
=24

5、原式
=（3/7x7)x(15/16x4/15)
=3x1/4
=3/4

6、原式
=（22+1）x15/22
=22x15/22+1x15/22
=15+15/22
=15又15/22

其中，/是分数线。

追问

求你了

求你了，帮我做(ಥ_ಥ)

追答

7、
=2/3+2/3
=1又1/3

8、
=5/6x3/5+7/4
=1/2+7/4
=2/4+7/4
=9/4
=2又1/4

9、
=1/10x5+2/7
=1/2+2/7
=7/14+4/14
=11/14

10、
=（3/5+2/5）x20
=1x20
=20

11、
=3/5x5/9+9/10x5/9
=1/3+1/2
=2/6+3/6
=5/6

12、
=13/23x46/39x2/3
=2/3x2/3
=4/9

追问

最后一次

追答

13
=5/16+1/4
=5/16+4/16
=9/16

14
=1/3x12-1/4x12
=4-3
=1

15
=4/5x(9+1)
=4/5x10
=8

16
=1/4x2/3
=1/6

17
=3/4x1/4x16/27
=3/16x16/27
=3/27
=1/9

18
=2x6/5x7/8
=6/5x7/4
=21/10
=2又1/10

追问

做完了，马上给你

2题，没了

追答

19
=1/8x8/5x25/11
=1/5x25/11
=5/11

20
=7/20x5x6/5
=7/20x6
=7/10x3
=21/10
=2又1/10

追问

真是不知怎么谢谢你了