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efectuati in doua moduri: (62+23)÷2

Răspuns :

85:2= 42.5
62:2=31
23:2=11.5
31+11.5=42.5
(62+23)÷2=
85÷2=42.5
.............................
(62+23)÷2=
62÷2=31
23÷2=11.5
31+11.5=42.5