Question

Pls na teraz
Daje 50 punktów

Answer 1

Odpowiedź:

zad 1

a) 5/9 - 2/9 = 3/9 = 1/3

b) 2 3/8 + 7/8 = 2 10/8 = 3 2/8 = 3 1/4

c) 2 1/9 - 1 7/9 = 1 10/9 - 1 7/9 = 3/9 = 1/3

d) 3/7 + 5/8 = 24/56 + 35/56 = 59/56 = 1 3/56

e) 2 1/3 + 3/7 = 2 7/21 + 9/21 = 2 16/21

f) 1 1/6 - 7/9 = 1 3/18 - 14/18 = 21/18 - 14/18 = 7/18

g) 3 3/4 - 2 1/3 = 3 9/12 - 2 4/12 = 1 5/12

h) 1 3/7 + 5/8 = 1 24/56 + 35/56 = 1 59/56 = 2 3/56

i) 2 1/4 + 3 3/7 = 2 7/28 + 3 12/28 = 5 19/28

j) 1 1/8 - 7/9 = 1 9/72 - 56/72 = 81/72 - 56/72 = 25/72

k) 3 3/5 - 2 1/4 = 3 12/20 - 2 5/20 = 1 7/20

zad 2

5 l - (2 3/4 + 1 3/4) l = 5 l - 3 6/4 l = 5 l - 4 2/4 l = 5 l - 4 1/2 l = 1/2l

Odp: trzeba dolać jeszcze 1/2 litra soku