((5.7 : 0.3 - 8 1/3) * 0.75) : (( 2 1/8 + 1.75 ) : 15.5
1) 5.7 : 0.3 = 5 7/10 : 3/10 = 57/10 : 3/10 = 57/10 * 10/3 = 19
2) 19 - 8 1/3 = 57/3 - 25/3 = 32/3
3) 32/3 * 0.75 = 32/3 * 3/4 = 8
4) 2 1/8 + 1.75 = 19/8 + 1 3/4 = 19/8 + 7/4 = 19/8 + 14/8 = 33/8
5) 33/8 : 15.5 = 33/8 : 15 1/2 = 33/8 : 31/2 = 33/8 * 2/31 = 33/124
6)8 : 33 /124 = 992/124 : 33/124 = 992/124 * 124/33 =992/33 = 30 2/33
Ответ : 30 2/33