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b) [1,2(6)+3,(6)-3,5]:0,4(3)= ?

Răspuns :

={(126-12)/90+(36-3)/9-35/10}/(43-4)/30=[114/90+33/9-35.10]/39/30=
19/15+11/3-7/2)/13/10=(38+110-105)/30*10/13=430/390=43/39


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