Odpowiedź:
1 3/5 - (5/8 * 0,8 + 1 3/5) : 2 = 1 3/5 - (5/8 * 8/10 + 1 3/5) * 1/2 =
= 1 3/5 - (1/2 + 1 3/5) * 1/2 = 1 3/5 - (5/10 + 1 6/10) * 1/2 = 1 3/5 - 1 11/10 * 1/2 =
= 1 3/5 - 21/10 * 1/2 = 1 3/5 - 21/20 = 1 3/5 - 1 1/20 = 1 12/20 - 1 1/20 = 11/20
(1/3 + 3,5) * (6 1/5 - 4,7) = (1/3 + 3 1/2) * (6,2 - 4,7) = (2/6 + 3 3/6) * 1,5 =
= 3 5/6 * 1 1/2 = 23/6 * 3/2 = 23/4 = 5 3/4
Szczegółowe wyjaśnienie:
