15比多7 比12少7 比11少7
14-=
-8=
12-3=
7+8=
9+=15 8+=14 5+=13
15-9= 14-8= 13-5=
原有 |
13辆 |
18辆 |
14辆 |
出租 |
8辆 |
6辆 |
7辆 |
还剩 |
辆 |
辆 |
辆 |
10-2 = 13-6 = 8 + 6 = 16-8 =
17-9 = 14 + 3 = 19-9 = 14-7 =
5+=11 9+=14 6+=10
-8=2 -0=6 +=10