Вычислить 9-( 1 5/8 +3/20) , 4 5/6-(2 3/8 +7/12)

9 - ( 13/8 + 3/20 ) = 9 - ( 65+6 / 40 ) = 9 - 71/40 = 9/1 - 71/40 = 360-71 / 40 = 289/40 = 7 9/40

4 5/6 - ( 19/8 + 7/12 ) = 4 5/6 - ( 57+14 / 24 ) = 4 5/6 - 71/24 = 29/6 - 71/24 = 116-71 / 24 = 45/24 = 1 21/24 = 1 7/8