Oblicz.
a) 10 - 20 : 10 * 40
b) (625 - 50 : 2) * 2


Odpowiedź :

[tex]a)\ 10 - 20 : 10 * 40 = 10 - 2 * 40 = 10 - 80 = -70\\\\b)\ (625 - 50 : 2) * 2 = (625 - 25) * 2 = 600 * 2 = 1200[/tex]

10 - 2 * 40 = 10 - 80 = -70

(625-25) * 2 = 600 *2 = 1200