Question

Wykonaj podane działania.

(3 1/2 + 2 4/7-5 3/7)*2 1/3
(4 1/6-1 2/3-2 1/18)*2 7/10
(1 3/5 + 2 2/7-3 19/35)*1 5/9
e) (2 3/5- 1 7/10-9/50)*1 7/8

daje naj !!!!
prosze o pelnie rozwiazanie duzo punktów !!!

Answer 1

(3 1/2 + 2 4/7-5 3/7)*2 1/3 = (3 i 2/14 + 2 i 8/14 - 5 i 6/14) * 2 i 1/3 = 5 i 10/14 - 5 i 6/14 * 7/3 = 4/14 * 7/3 = 4/6 = 2/3

(4 1/6-1 2/3-2 1/18)*2 7/10 = (4 i 3/18 - 1 i 12/18 - 2 i 1/18 ) * 2 i 7/10 = 2 i 9/18 - 2 i 1/18 * 27/10 = 8/18 * 27/10 = 12/10 = 1 i 2/10 = 1 i 1/5

(1 3/5 + 2 2/7-3 19/35)*1 5/9 =(1 i 21/35 + 2 i 10/35 - 3 i 19/35) * 1 i 5/9 = 3 i 31/32 - 3 i 19/35 * 14/9 = 12/38 * 14/9 = 28/48 = 14/24 = 7/12

(2 3/5- 1 7/10-9/50)*1 7/8 = (2 i 30/50 - 1 i 35/50 - 9/50) * 1 i 7/8 = 45/50 - 9/50 * 15/8 = 36/50 * 15/8 = 54/40 = 1 i 14/40 = 1 i 7/20