Răspuns:
0,1(6) = (16-1)/90 = 15/90 = 5/30 = 1/6
0,(6) = 6/9
x = 1/6+6/9
x = 1/6+3/2
x = (1+4)/6
x = 5/6 → inversul b) 6/5.
EVERGREEN
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