Oblicz
a)4 1/2:1 1/3 - 2 2/5 x 5/7=
b)(3 3/4 - 2 7/8) x (5 1/5- 3 1/3)=



Oblicz A4 121 13 2 25 X 57 B3 34 2 78 X 5 15 3 13 class=