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(40+30)×50 calculeaza in 2 moduri

Răspuns :


[tex]70 \times 50 = 350 \\ (4 + 3) \times 5 \times 10 = 7 \times 5 \times 10 = 35 \times 10 = 350[/tex]
(40+30)·50=70·50=3500

(40+30)·50=50·40+50·30=2000+1500=3500