42. There are 33 RMB notes in denominations of 1 yuan, 5 yuan, and 10 yuan, totaling 187 yuan. If the number of 5 yuan notes is 5 less than the number of 1 yuan notes, find how many notes of each denomination there are.
Answer: 1 yuan 12 pieces, 5 yuan 7 pieces, 10 yuan 14 pieces