⚠ 15 11/20 is read as the mixed number 15 + 11/20 ⚠ 12 1/10 is read as the mixed number 12 + 1/10 Let's calculate: 15 + 1120 + 12 + 110 + 2 + 720 ℹ15 + 12 = 27‖1120 + 110 = 11 + 220 27 + 11 + 220 + 2 + 720 ℹ11 + 2 = 13‖27 + 2 = 29 29 + 1320 + 720 ℹ1320 + 720 = 13 + 720 29 + 13 + 720 ℹ13 + 7 = 20 29 + 2020 ℹ2020 = 1 29 + 1 ▶Result: 30