3) (1-1/3-1/6-1/9)*18 = 18 - 6 - 3 - 2 = 7
4) (15/16 - 5/12 + 2 1/2) 4/5 = (15/16 - 5/12 + 5/2) 4/5 = (15/16 - 5/12 + 40/16) 4/5 = (45/48 - 20/48 + 120/48) 4/5 = 145/48 * 4/5 = 145/60 = 2 25/60 = 2 5/12
3) (1-1/3-1/6-1/9)*18 = 18 - 6 - 3 - 2 = 7
4) (15/16 - 5/12 + 2 1/2) 4/5 = (15/16 - 5/12 + 5/2) 4/5 = (15/16 - 5/12 + 40/16) 4/5 = (45/48 - 20/48 + 120/48) 4/5 = 145/48 * 4/5 = 145/60 = 2 25/60 = 2 5/12