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calculeaza in doua moduri (5+2+2)×6

Răspuns :

( 5+2+2)×6 =9×6 =54 (5+2+2)×6 =5×6+2×6+2×6 =30+12+12 =42+12 =54
9*6=54 primul mod 
30+12+12=54 al doilea mod