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

### Instruction:
The cheerleading coach is ordering new uniforms. There are 4 cheerleaders who need a size 2, a certain number who need a size 6, and half that number who need a size 12. If there are 19 cheerleaders total, how many cheerleaders need a size 6?

### Response:
 Hebu A iwe idadi ya wachezaji wa kikosi cha kuimba ambao wanahitaji ukubwa wa 6.
Kuna wachezaji wa kikosi cha kuimba 4 ambao wanahitaji ukubwa wa 2, wachezaji wa kikosi cha kuimba A ambao wanahitaji ukubwa wa 6, na wachezaji wa kikosi cha kuimba A/2 ambao wanahitaji ukubwa wa 12.
Jumla ya wachezaji wa kikosi cha kuimba ni 19, hivyo 4 + A + A/2 = 19.
Kwa kutatua A, 4 + A + A/2 = 19 inakuwa 2A + 4 = 19, 2A = 15, na A = 15/2 = <<15/2=7.5>>7.5.