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

### Instruction:
 Ryanne ni mzee kwa miaka 7 kuliko Hezekiah. Pamoja umri wa Ryanne na Hezekiah unafanya miaka 15. Hezekiah ana miaka mingapi?


### Response:
 Hezekiah = H
Ryanne = H + <<+7=7>>7
2H + 7 = 15
2H = 15 - 7
2H = <<8=8>>8
Hezekiah = <<4=4>>4
Hezekiah ana miaka 4.