1) 8 7/9-x=3 5/6 2) (x-5/6)+11/118 =19/24

8 7/9-х=3 5/6
х=8 7/9-3 5/6
х=8 14/18-3 15/18
х=7 32/18-3 15/18
х=4 17/18

(х-5/6)+11/118=19/24
х-5/6=19/24-11/118
х-5/6=2242/2832-264/2832
х-5/6=1978/2832
х-5/6=989/1416
х=989/1416-5/6
х=989/1416-1180/1416
х=-191/1416