QuestionDid Mr. Oldham correctly solve to get -8? If not, what is the right answer and his mistake?
Studdy Solution
STEP 1
Assumptions1. The problem to solve is . Mr. Oldham's solution is -8
STEP 2
First, we need to understand the mathematical operation in the problem. The problem is a subtraction operation involving a negative number.
STEP 3
In mathematics, subtracting a negative number is equivalent to adding a positive number. Therefore, the problem can be rewritten as
STEP 4
Now, we can perform the addition operation.
STEP 5
Compare the correct answer with Mr. Oldham's solution. The correct answer is8, but Mr. Oldham's solution is -8.
STEP 6
Conclude that Mr. Oldham's solution is incorrect. The correct answer should be8, not -8. Mr. Oldham made a mistake by not recognizing that subtracting a negative number is equivalent to adding a positive number.
The correct answer is8. Mr. Oldham's answer of -8 is incorrect because he did not correctly apply the rule of subtracting a negative number, which is equivalent to adding a positive number.
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