65*(4 7/13m-2 3/5m)=9 надо пожалуйста

65 • ( 4 7/13m - 2 3/5m ) = 9 4 7/13 - 2 3/5 = 4 35/65 - 2 39/65 = 3 100/65 - 2 39/65 = 1 61/6565 • ( 1 61/65m ) = 9 1 61/65m = 9/65 126/65m = 9/65 m = 9/65 : 126/65 m = 9/126 m = 1/14