C = 11÷(2\3-5/2)
C = 11 : (2 x 2 / 3 x 2 - 5 x 3 / 2 x 3)
C = 11 : (4/6 - 15/6)
C = 11 : - 11/6
C = 11 x - 6/11
C = - 66/11
C = 11 x - 6 / 11 x 1
C = - 6
D = 3/7-15/7÷5/24
D = 3/7 - 15/7 x 24/5
D = 3/7 - 360/35
D = 3 x 5 / 7 x 5 - 360/35
D = 15/35 - 360/35
D = - 345/35
D = 5 x - 69 / 5 x 7
D = - 69/7
E= (11/7-2/5)×24/7
E = (11 x 5 / 7 x 5 - 2 x 7 / 5 x 7) x 24/7
E = (55/35 - 14/35) x 24/7
E = 41/35 x 24/7
E = 984/245