Question

{11-2]16: 45:5+5 +42:14-1]}x3-1= te rog

Answer 1

{11-2 [16:9+5+3-1]}×3-1={11-2[1.7+5+3-1]}×3-1=[11-2×10.7]×3-1=[11-21,4]×3-1=10,4×3-1=31,2-1=30,2