Как решить 9 целых 1/12-1 целая 3/16

9 1/12 - 1 3/16 = 109/12 - 19/16 = (109*4)/48 - (19*3)/48 =  = 436/48 - 57/48 = 379/48 = 7 43/48

109/12-19/16=436/48-57/48=379/48=7целых 43/48