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80.1-6,4*(9,6:0,24-28,85)

Răspuns :

80.1-6,4*(9,6:0,24-28,85)=
=80,1-6,4*(40-28,85)=
=80,1-6,4*11,15=
=80,1-71,36=
=8,74

80.1-6,4*(9,6:0,24-28,85)=
=80,1-6,4×(40-28,85)
=80,1-6,4× (11,15)
=80,1-71,36

= 8,74