Question

What is the value of the expression below?

7-2-4.5x3+8
A) 0
B) -16.5
C) -2
D) 30.8

Answer 1

The value of the expression 7-2-4.5x3+8 is -0.5.

Step-by-step explanation:

The value of the expression 7-2-4.5x3+8 can be found by following the order of operations, which is also known as the PEMDAS rule. The PEMDAS rule stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Using this rule, we can simplify the expression step by step:

1. Multiplication: 4.5x3 = 13.5
2. Addition and Subtraction (from left to right): 7-2 = 5, then 5-13.5 = -8.5, then -8.5+8 = -0.5

Therefore, the value of the expression 7-2-4.5x3+8 is -0.5.