许多答案:9-8=7-6=5-4=3-2=1-09-4=8-3=7-2=6-1=5-08-9=7-6=4-5=2-3=0-14-9=3-8=2-7=1-6=0-5还可以先后位置变换:如:7-6=9-8=5-4=3-2=1-0。。。。
1 - 0 = 3 - 2 = 5 - 4= 7- 6 = 9 - 8
9-4 = 8-3 = 7-2 = 6-1 = 5-0 9-8 = 7-6 = 5-4 = 3-2 = 1-0
9-8=7-6=5-4=3-2=1-0