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60-10 : (37-4xc) = 50

Răspuns :

60-10:(37-4*c)=50
10:(37-4*c)=60-50
37-4*c=10:10
4*c=37-1
c=36:4
c=9
proba:
60-10:(37-4*9)=60-10:(37-36)=60-10:1=60-10=50

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