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0,2(6)-1,12+1,(3)
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Răspuns :

0,2(6)-1,12+1,(3) =

= (26-2)/90 - 112/100 + (13-1)/9 =

= 24/90 - 112/100 + 12/9 =

= 4/15 - 28/25 + 4/3 =

= 4×5/75 - 28×3/75 + 4×25/75 =

= (20 - 84 + 100)/75 =

= 36/75 =

= 12/25