prompt: 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?
messages.content: 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?
messages.role: user
messages.content: Let x be the number of toys Mandy has.
  Anna has 3*x toys.
  Amanda has 3*x+2 toys.
  x+3*x+3*x+2=142
  7*x+2=142
  7*x=140
  x=<<20=20>>20
  #### 20
messages.role: assistant