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3×5-3×6:(3×3×3:3+0:5)+30:(3:3+5)DAU COROANAAA

Răspuns :

3×5-3×6:(3×3×3:3+0:5)+30:(3:3+5)=
15-18:(9*3:3+0:5)+30:(1+5)=
15-18:(27:3+0)+30:6=
15-18:9+5=
15-2+5=
13+5=18