cum rezolvi ex asta [81:9+7ori (2÷2+6)÷7]÷2=


Răspuns :

(9+7•7÷7)÷2=
(9+7)÷2=
16÷2=
8
[81÷9+7×(2÷2+6)÷7]÷2= =[9+7×7÷7]÷2= [9+7]÷2= 16÷2=8