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Calculeaza in doua moduri :
23 × 7 + 23 × 3 si 51 × 16 + 51 × 84
Vă rog ajutati-mă , e urgentttttt


Răspuns :

I
1) 23×7+23×3=161+69=230
2) 23×7+23×3=23×(7+3)=23×10=230

II
1) 51×16+51×84=816+4284=5100
2) 51×16+51×84=51×(16+84)=51×100=5100