Odpowiedź :
Odpowiedź:
2 6/7 - 1 3/4 + 1/4 = 20/7 - 7/4 + 1/4 = 80/28 - 49/28 + 7/28 = 38/28 = 19/14 = 1 5/14
(5/8 - 3/20) * 20/38 = (25/40 - 6/40) * 20/38 = 19/40 * 20/38 = 1/4
Odpowiedź:
2 6/7 - 1 3/4 + 1/4 = 20/7 - 7/4 + 1/4 = 80/28 - 49/28 + 7/28 = 38/28 = 19/14 = 1 5/14
(5/8 - 3/20) * 20/38 = (25/40 - 6/40) * 20/38 = 19/40 * 20/38 = 1/4