Below is an instruction that describes a task. Write a response that appropriately completes the request in Chinese. Please answer in Chinese.

### Instruction:
 艾米昨天骑了12英里。如果她比昨天骑的距离少3英里，那么她两天总共骑了多少英里？


### Response:
 艾米昨天骑的距离的两倍是12*2 = <<12*2=24>>24英里。
如果艾米比昨天骑的距离少3英里，那么她今天骑了24-3 = <<24-3=21>>21英里。
她两天总共骑了21+12 = <<21+12=33>>33英里。