计算,可以简便的就简便.
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/19 07:13:16
计算,可以简便的就简便.
![](http://img.wesiedu.com/upload/1/f6/1f6175b0a7b995ad8538d0a53fda33f8.jpg)
![](http://img.wesiedu.com/upload/4/a5/4a5c0e1130e0a5387147376017ef3187.jpg)
我表示一题都不会.我加20,有人回答再加!要没有人回答的话,我的悬赏不就浪费了吗!
![](http://img.wesiedu.com/upload/1/f6/1f6175b0a7b995ad8538d0a53fda33f8.jpg)
![](http://img.wesiedu.com/upload/4/a5/4a5c0e1130e0a5387147376017ef3187.jpg)
我表示一题都不会.我加20,有人回答再加!要没有人回答的话,我的悬赏不就浪费了吗!
![](http://img.wesiedu.com/upload/c/f7/cf78694c4e8f51c6faa5cbba51c1bece.jpg)
=(14-13+8)/15
=9/15
=3/5
![](http://img.wesiedu.com/upload/d/25/d25dbe41134daa2d0b7f4e985605dc1c.jpg)
=(4+8+3)+(15/17+2/17+7/12)
=15+(1+7/12)
=16+7/12
=16又7/12
![](http://img.wesiedu.com/upload/b/6f/b6fadfb77a2e23dc112f3e2e1afbc262.jpg)
=(6-1-3)+(2/16-15/16-5/6)
=2+(-13/16-5/6)
=2-(39/48+40/48)
=2-79/48
=(96-79)/48
=17/48
![](http://img.wesiedu.com/upload/3/27/327d263c9d1982e56c28b20e6219f331.jpg)
=6.5-4.8+7/6
=17/10+7/6
=51/30+35/30
=86/30
=43/15
![](http://img.wesiedu.com/upload/c/7e/c7ec4ac2feffed62cf55845896eacfbc.jpg)
=(15-5+4)+(3/8-6/8-4/5)
=14+(-3/8-4/5)
=14-(15/40+32/40)
=14-47/40
=12+80/40-47/40
=12+33/40
=12又33/40
![](http://img.wesiedu.com/upload/7/40/740d381f12eff09465c08046cb932240.jpg)
=9.28-[(3+2+1)+(3/13+2/13+8/13)
=9.28-[6+1]
=9.28-7
=2.28
![](http://img.wesiedu.com/upload/d/23/d23a2eea8b2ab9e2b46b8f0e76f29af8.jpg)
=(10-2-3.9)+(3/14-3/14)
=4.1
![](http://img.wesiedu.com/upload/b/2a/b2aada460260e4517bb18525e09e48b4.jpg)
=(10-3-2+1)+(1/6-11/20-9/20+3/5)
=6+(1/6+3/5-1)
=5+(5+18)/30
=5+23/30
=5又23/30
![](http://img.wesiedu.com/upload/2/8b/28b08d99c08ece784992900a3dc79c12.jpg)
=(27-24+25)/90
=28/90
=14/45
![](http://img.wesiedu.com/upload/3/d5/3d5ae79513269ccec5dbec21283de67f.jpg)
=(57+3-4)+(5/8-11/12)
=56+(15-22)/24
=56-7/24
=55+17/24
=55又17/24
![](http://img.wesiedu.com/upload/9/b4/9b41816abf2d27e1f0e511580b207d93.jpg)
=(24-15+6)+(11/30+1/6)
=15+(11+5)/30
=15+8/15
=15又8/15
![](http://img.wesiedu.com/upload/b/8f/b8f69c4bbc4939019288a85b4bf385bc.jpg)
=(15-7-2)+(1/6-1/5-4/5)
=6+(1/6-1)
=5+1/6
=5又1/6