1×2+{3×2-[4×3-(1+2×3)-4:2]:3}:5=

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Răspuns :

1×2+{3×2-[4×3-(1+2×3)-4:2]:3}:5=
=1×2+{3×2-[4×3-(1+6)-4:2]:3}:5=
=1×2+[3×2-(4×3-7-4:2):3]:5=
=1×2+[3×2-(12-7-2):3]:5=
=1×2+(3×2-3:3):5=
=1×2+(6-1):5=
=1×2+5:5=
=2+1=
=3