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calculeaza:
CxD-AxB
daca
A-5x5x4=Bx10=C:2:2=600:D=10x2x5


Răspuns :

A-100 = 10B= c:2:2 = 600:D= 100
A= 100+100=200
B=100:10=10
C=100x2x2=400
D=600:100=6

CxD-AxB= 400x6-100x10= 2400-1000=1400

coroanaa ???