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

### Instruction:
 Sam ana ng'ombe 18. Ng'ombe nusu zaidi ya ng'ombe ni weusi. Ng'ombe wangapi sio weusi?


### Response:
 Hebu sema idadi ya ng'ombe weusi ni x.
Kisha 5 zaidi ya nusu ya ng'ombe ni weusi, kwa hivyo x+5=<<x+5=>>x+5.
Nusu ya ng'ombe ni x/2=<<x/2=>>x/2.
Kwa hivyo x+5=<<x+5=>>x+5=x/2=<<x/2=>>x/2.
Tukitatua kwa x, tunapata x=<<x=>>x=10.
Kwa hivyo kuna ng'ombe 18-10=<<18-10=>>18-10=8 ambao sio weusi.