Odpowiedź:
Szczegółowe wyjaśnienie:
a) 1 1/4+1/4= 5/4+1/4= 6/4
6/4*2 = 12/4 = 3
b) 3 +1 1/8 = 3+9/8 = 4 1/8
4 1/8*2 = 33/8 * 2 = 66/8 = 8 1/4
c) 6 2/5-3 3/5 = 32/5 - 18/5 = 14/5
14/5 * 2 = 28/5 = 5 3/5
D) 7 1/6 - 5 5/6 = 43/6 - 35/6 = 8/6
8/6 * 2 = 16/6 = 2 4/6 = 2 1/3
