Answer:
220
Step-by-step explanation:
PEMDAS
Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
1. [81 - (4 x 6)], do the parentheses inside the brackets
[81 - 24] = [57]
2. [tex]7^2=49[/tex], because it is an exponent
3. 49 + 3[57], do 3[57], because it is multiplication
49+171
220
