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Calculati in doua moduri:17*7+64*7+7*119

Răspuns :

1) 119+448+833=1400

2) 7(17+64+119)=7x200=1400


Primul mod: calculezi

17*7+64*7+7*119=119+448+833=1400

A doua variant: factor comun

7(17+64+119)= 7*200= 1400