Question

54+9{43-26-22}÷3[16+3×3-(4×5)]

Answer 1

54+9(43-26-22) ÷ 3(16+3×3-(4×5)
= 63 (-5) ÷ 3 (16 + 9 - (20)]
= -315 ÷ 3 (25-20)
= -315÷ 3 (5)
= -315 ÷ 15
= -21

Hope it helps.