Respuesta :

Answer:

255

Step-by-step explanation:

21 ÷ 3 + [27] × 9 + 5

21 ÷ 3 + 243 + 5

7 + 243 + 5

255

9 x 3 = 27
27 x 9 = 243
21/3 = 7
7 + 243 + 5 = 255
Answer 255
Use PEMDAS
Parentheses, Exponent, Multiply, Divide, Add, Subtract
Solve in that order