Final answer:
To simplify the expression (2.8 + 1.2) * 6 * 3, add the numbers inside the parentheses first, then perform the multiplication from left to right.
Step-by-step explanation:
To simplify the given expression, we need to follow the order of operations, which is also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction). Let's simplify step by step:
- Inside the parentheses, add 2.8 and 1.2 to get 4.
- Then, multiply 4 by 6 to get 24.
- Finally, multiply 24 by 3 to get the simplified expression: 72.