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1,5(3)+3,1(5)-2×2,3(4)= ?
Va rog din suflet!!!!


Răspuns :

1,5(3)+3,1(5)-2×2,3(4)=
=(153-15)/90+(315-31)/90-2×(234-23)/90=
=138/90+284/90-2×211/90=
=422/90-211/45=
=211/45-211/45=0