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3,4x6,5-15,178=
1,(3)+1,2(5)=


Răspuns :


3,4x6,5-15,178=
=22,1-15,178=6,922

1,(3)+1,2(5)=
=(13-1)/9+(125-12)/90=
=12/9+113/90=
=(120+113)/90=233/90