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

### Instruction:
 Viggo alitumia $80 kununua shati. Alilipa shati kwa kutumia noti za $20 na $10. Ikiwa alimpa muhudumu noti moja ya $20 zaidi ya noti za $10, alitoa noti ngapi za $10?


### Response:
 Chukua x kuwa idadi ya noti za $10.
Hivyo, kuna noti za $20 (x + 1).
Kuongeza noti za $10 na $20 inapaswa kufikia $80, hivyo equation ni 10x + 20(x + 1) = 80.
Kisha hamisha 20 upande wa kulia wa equation, hivyo inakuwa 10x + 20x + 10 = 80.
Kuongeza like terms upande wa kushoto inatoa 30x + 10 = 80.
Kisha hamisha 10 upande wa kulia wa equation, hivyo inakuwa 30x = 70.
Kwa kusuluhisha x, tuna 70/30 = <<70/30=2.333>>2.333, ambayo inamaanisha x = 2.
Hivyo, kuna noti 2 za $10.