20×3+8×3=60+24=84
50×4-30×4=200-120=80
(20 + 8) × 3 = 20 × 3 = 60 | 8 × 3 = 24
60 + 24 = 84
(50- 30 ) × 4 = 200 - 120 = 80
20×3+8×3=60+24=84
50×4-30×4=200-120=80
(20 + 8) × 3 = 20 × 3 = 60 | 8 × 3 = 24
60 + 24 = 84
(50- 30 ) × 4 = 200 - 120 = 80