4целых1/6-(1целая3/8-x)=3целых5/12
4 1/6-(1 3/8-х)=3 5/12 2* 1/3-(3/8-х)=5/4 2/3-3/8+х=5/4 7/24+х=5/4 х=5/4-7/24 х=23/24 Ответ:23/24