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Efectuati 9•{[8+7•(6+5)]•4-3}+2

Răspuns :

9•[(8+7•11)•4-3]+2
9
•[(8+77)•4-3]+2
9
•(85•4-3)+2
9
•(340-3)+2
9
•337+2
3033+2=3035
9x[(8+77)x4-3]+2=
9x(85x4-3)+2=
9x337+2=
3033+2=3035