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calculati in doua moduri 25*87+25*92,

Răspuns :

primul mod:

25*87+25*92=
2175+2300=4475

________________________
 al doilea mod:
 25*87+25*92=
25*(87+92)=
25*179=4475



25 x 87 + 25 x 92 =
= 2175 + 2300
= 4475

25 x 87 + 25 x 92 =
= 25 x (87 + 92)
= 25 x 179
= 4475