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

### Instruction:
Nancy has a bag containing 22 tortilla chips. She gives 7 tortilla chips to her brother and 5 tortilla chips to her sister, keeping the rest for herself. How many did Nancy keep for herself?

### Response:
 Idadi ya chips kabla ya kumpa yeyote ni 22.
Alimpa 7 kwa ndugu yake, hivyo alibakiwa na 22-7 = <<22-7=15>>15 chips.
Kisha alimpa 5 zaidi kwa dada yake, hivyo alibakiwa na 15-5 = <<15-5=10>>10 chips.