astea 2 repede vrg!!!!!!​

Astea 2 Repede Vrg class=

Răspuns :

Răspuns:

1) (17+13)÷2=15

(23+41)÷2=31

(28+52)÷2=40

(37+33)÷2=35

2) (3+5+13)÷3=7

(6+7+11)÷3=8

(5+7+15)÷3=9

(8+9+19)÷3=13