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

### Instruction:
 Mkulima ana nguruwe mara mbili ya ng'ombe, na ng'ombe 4 zaidi ya mbuzi. Ikiwa mkulima ana jumla ya wanyama 56, mbuzi wangapi ana?


### Response:
 Hebu x iwe idadi ya mbuzi
Ng'ombe: 4+x
Nguruwe: 2(4+x)=8+2x
Jumla: x+4+x+8+2x=56
4x+12=56
4x=44
x=<<11=11>>11 mbuzi