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

### Instruction:
Twice Angie's age, plus 4, is 20. How old is Angie?

### Response:
 Mara mbili ya umri wa Angie ni 20-4=<<20-4=16>>16.
Angie ana umri wa 16/2=<<16/2=8>>8.