68/17-(3.625-29/17)-43/8.

问题描述:

6

8
17
-(3.625-2
9
17
)-4
3
8

6

8
17
−(3.625− 2
9
17
−4
3
8

=6
8
17
+ 2
9
17
-3.625-4.375
=9-(3.625+4.375)
=9-8
=1.