13 9/20 + 3 11/20
⚠ 13 9/20 is read as the mixed number 13 + 9/20
⚠ 3 11/20 is read as the mixed number 3 + 11/20
Let's evaluate: 13 + 920 + 3 + 1120
ℹ13 + 3 = 16‖920 + 1120 = 9 + 1120
16 + 9 + 1120
ℹ9 + 11 = 20
16 + 2020
ℹ2020 = 1
16 + 1
▶Result:   17