( 6 1/4 - 4 1/8)×4+3 1/3÷2 1/2

(6 1/4 - 4 1/8) · 4 + 3 1/3 : 2 1/2 = 9 5/6

1) 6 1/4 - 4 1/8 = 6 2/8 - 4 1/8 = 2 1/8 = 17/8

2) 17/8 · 4 = 17/2 = 8 1/2

3) 3 1/3 : 2 1/2 = 10/3 : 5/2 = 10/3 · 2/5 = (2·2)/(3·1) = 4/3 = 1 1/3

4) 8 1/2 + 1 1/3 = 8 3/6 + 1 2/6 = 9 5/6