(1 4/9 +2 5/6 -2 3/4) x (5/11 + 10/20) = 1 45/88
1) 1 4/8 + 2 5/6 = 1 12/24 + 2 20/24 = 3 32/24 = 4 8/24 = 4 1/3
2) 4 1/3 - 2 3/4 = 4 4/12 - 2 9/12 = 1 7/12
3) 5/11 + 10/20 = 100/220 + 110/220 = 210/220 = 21/22
4) 21/22 • 1 7/12 = 21/22 • 19/12 = 7/22 • 19/4 = 133/88 = 1 45/88
(1 4/9 +2 5/6 -2 3/4) x (5/11 + 10/20) = 1 45/88
1) 1 4/8 + 2 5/6 = 1 12/24 + 2 20/24 = 3 32/24 = 4 8/24 = 4 1/3
2) 4 1/3 - 2 3/4 = 4 4/12 - 2 9/12 = 1 7/12
3) 5/11 + 10/20 = 100/220 + 110/220 = 210/220 = 21/22
4) 21/22 • 1 7/12 = 21/22 • 19/12 = 7/22 • 19/4 = 133/88 = 1 45/88