Question
Ahmad has z erasers. Bobby has three times as many erasers as Ahmad but 7 erasers fewer than Jason.
  1. How many erasers do they have altogether? (Express your answer in terms of z).
  2. If z = 13, how many erasers do the three boys have altogether?
3 m
(a)

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(b)

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Ahmad has z erasers. Bobby has three times as many erasers as Ahmad but 7 erasers fewer than Jason.
  1. How many erasers do they have altogether? (Express your answer in terms of z).
  2. If z = 13, how many erasers do the three boys have altogether?