12/9-(6/7-6/9) 能简便计算就简便计算

分类: 作业答案 • 2022-06-10 22:51:22

问题描述：

答

12/9-(6/7-6/9)
=12/9+6/9-6/7
=2-6/7
=8/7

答

12/9-(6/7-6/9)
=12/9+6/9-6/7
=18/9-6/7
=2-6/7=8/7

答

12/9-(6/7-6/9)
=12/9-6/7+6/9
=(12+6)/9-6/7
=2-6/7
=8/7
如果本题有什么不明白可以追问,

答

12/9-(6/7-6/9)
=12/9+6/9-6/7
=2-6/7
=1又1/7