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

### Instruction:
Erin counts six trolls hiding by the path in the forest, 6 less than four times that number of trolls hiding under the bridge, and half as many trolls hiding in the plains as under the bridge. How many trolls did she count in total?

### Response:
 Acha x iwe idadi ya trola wanaojificha chini ya daraja.
Idadi ya trola wanaojificha katika msitu = 6
Idadi ya trola wanaojificha chini ya daraja = 4x-6
Idadi ya trola wanaojificha katika tambarare = x/2
Jumla ya idadi ya trola = 6 + 4x-6 + x/2
= 6 + 4x - 6 + x/2
= 4x + x/2
= 4x + 2x/2
= 6x + 2x
= 8x