Answer:
1
Step-by-step explanation:
27 - {18 + (16 ÷ (2 x 3 - 4))}
27 - {18 + (16 ÷ (6 - 4))}
27 - {18 + (16 ÷ 2)}
27 - {18 + 8}
27 - 26 = 1