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

### Instruction:
Anna has 3 times as many toys as Mandy and 2 fewer toys than Amanda. If they have 142 toys all together, how many toys does Mandy have?

### Response:
 Hebu x iwe idadi ya vitu vya kuchezea vya Mandy.
Anna ana vitu 3*x.
Amanda ana vitu 3*x+2.
x+3*x+3*x+2=142
7*x+2=142
7*x=140
x=<<20=20>>20