gata operația corectă!

Răspuns:
18
Explicație pas cu pas:
3×5-3×6:(3×3×3:3+0:5)+30:(3:3+5)=
15-3×6:(3×3×3:3+0:4)+30:(3:3+5)=
15-3×6:(1×3×3+0:5)+30:(3:3+5)=
15-3×6:(1×3×3+0)+30:(3:3+5)=
15-3×6:(1×3×3+0)+30:(1+5)=
15-3×6:(3×3+0)+30:(1+5)=
15-3×6:9+30:6=
15-2+5=
18