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(9x5+25:5):5X2:4=
CE NU A MERS BINE



Răspuns :

(9x5+25:5):5x2:4=40:5x2:4=8x2:4=16:4=4
(45+5):5x2:4=50:5x2:4=10x2:4=20:4=5