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Am exercitiul urmator:
_____ _____ _____ _____
0,(1x) + 0,(2x) + 0,(3x) + 0,(4x) = 1,25

P.S : _____ inseamna in baza 10


Răspuns :

pai toate vin ori 10  = 1x+2x+3x+4x = x(1+2+3+4)=1.25 => x10=1.25 x= 10:1.25=8