3. Oblicz: PLS OBA ZADANIA BEZ B SZZYBKO PLISSSS

Odpowiedź:
zad 3
a)
4 1/2 : 6 + 3 2/3 = 9/2 * 1/6 + 3 2/3 = 9/12 + 3 2/3 = 3/4 + 3 2/3 =
= 9/12 + 3 8/12 = 3 17/12 = 4 5/12
c)
(5 1/2 - 3 1/4)² : 7 = (5 2/4 - 3 1/4)² : 7 = (2 1/4)² : 7 = (9/4)² * 1/7 =
81/16 * 1/7 = 81/112