(6 целых 1/8 -1,75): ( 9-2,2 * (5 целых 6/11 - 3,5 )) * 1целая 2/7

(6 целых 1/8-1,75)÷(9-2,2*(5 целых 6/11-3,5))*1 целая 2/7=(3 целых 1/4-7/4)÷(9-11/5*45/22)*2/7=-1÷(9-9/2)*2/7=-1÷9/2*2/7=-2/9*2/7=-4/63

(6 1/8 - 1,75) : ( 9 - 2,2 × ( 5 6/11 - 3,5 )) × 1 2/7 = ( 49/8 - 7/4 ) : ( 9 - 11/5 × ( 61/11 - 7/2 )) × 9/7 = 35/8 : ( 9 - 11/5 × 45/22 ) × 9/7 = 5/8 : ( 9 - 9/2 ) × 9 = 5/8 : 9/2 × 9 = 5/8 × 2/9 × 9 = 5/4 = 1 1/4 = 1,25