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

### Instruction:
 Thomas, Toby, na Rebecca walifanya kazi jumla ya masaa 157 katika wiki moja. Thomas alifanya kazi masaa x. Toby alifanya kazi masaa 10 chini ya mara mbili ya masaa ya Thomas, na Rebecca alifanya kazi masaa 8 chini ya Toby. Rebecca alifanya kazi masaa mangapi?


### Response:
 Toby: 2x-10
Rebecca: ((2x-10)-8) = 2x-18
Jumla: x+2x-10+2x-18 = 157
5x-28 = 157
5x = 185
x = <<37=37>>37 masaa
Rebecca: 2(37)-18 = 56 masaa