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

### Instruction:
 Gabriel ni mdogo kwa miaka 3 kuliko Frank. Jumla ya umri wao sasa hivi ni 17. Frank ana umri gani?


### Response:
 Acha X iwe umri wa Frank.
Hivyo Gabriel ana umri wa X-3.
Jumla ya umri wao ni X + (X-3) = 17 miaka.
2X-3 = 17
2X = 20
X = <<10=10>>10
Hivyo Frank ana umri wa X = <<10=10>>10 miaka.