• 25 × 12 - 14 / 4 + 6 = 16

  • 25 - 12 + 14 / 2 × 4 = 15

  • 25 - 15 + 5 / 4 × 16 = 21

  • 25 + 11 - 4 / 10 × 6 = 20


25 - 15 + 5 / 4 × 16 = 21