What is the value of -3 + 4.5 - (-1.2)?
1.5+1.2 = 2.7
I'll be glad to check your answer.
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To find the value of -3 + 4.5 - (-1.2), we can follow the order of operations, which is typically remembered using the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right).
Step 1: Simplify the expression within the parentheses (if any).
There is a set of parentheses in the expression, -(1.2). Simplifying within the parentheses will yield -1.2.
Step 2: Apply the double negative.
Since -1.2 is preceded by a negative sign, it becomes a positive number: 1.2.
Step 3: Perform the addition and subtraction from left to right.
Now, we can proceed with our calculation: -3 + 4.5 + 1.2.
To do this, start with the first addition -3 + 4.5 = 1.5.
And now perform the next addition 1.5 + 1.2 = 2.7.
Therefore, the value of -3 + 4.5 - (-1.2) is 2.7.