Algeraic equations and solving them

(ii) 17 + 3 − 5 18 4 12

18×2 = 36 4 × 9 = 36 12×4 = 36

17×2 = 34 36 36

3×9 = 27 36 36

5×3 = 15 36 36

34 + 27 − 15 = 46 36 36 36 36

= 46÷2 = 23