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Calculati in doua moduri:
3 x 6 + 6 x 7


Răspuns :

3x6+6x7=18+42=60
6(3+7)=6x10=60
3 • 6 + 6 • 7 = 18 + 42 = 60 3 • 6 + 6 • 7 = 6 • ( 3 + 7 ) = 6 • 10 = 60