Answer:
243
Step-by-step explanation:
Order of operations:
Parentheses.
Exponents.
Multiplication and Division (from left to right)
Addition and Subtraction (from left to right)
(can be abbreviated as PEMDAS)
72+3[81-(4x6)]
=72+3[81-24]
=72+3[57]
=72+171
=243
