Răspuns :
20×5:2+3-1:2×20:1+3×3=
100:2+3-1:2×20:1+3×3=
50+3-1:2×20:1+3×3=
50+3-0,5×20:1+3×3=
50+3-10:1+3×3=
50+3-10+3×3=
50+3-10+9=
53-10+9=
43+9=52
100:2+3-1:2×20:1+3×3=
50+3-1:2×20:1+3×3=
50+3-0,5×20:1+3×3=
50+3-10:1+3×3=
50+3-10+3×3=
50+3-10+9=
53-10+9=
43+9=52
20×5:2+3-1:2×20:1+3×3=
100:2+3-1:2×20:1+3×3=
50+3-1:2×20:1+9=
50+3-0.5×20+9=
53-10+9=
43+9=
=52