Question
Error Analysis Marcel and Kara do their math homework together. When they find 8minus(minus5), they get different answers. Marcel claims the difference is 13. Kara claims the difference is 3. Who is correct? What error likely led to the incorrect difference?
Question content area bottom
Part 1
▼
Marcel
Kara
is correct.
Question content area bottom
Part 1
▼
Marcel
Kara
is correct.
Answers
GPT-4o mini
To find the difference of \( 8 - (-5) \), we need to understand how subtraction of a negative number works. The operation can be rewritten using the rule that subtracting a negative is the same as adding a positive:
\[
8 - (-5) = 8 + 5 = 13.
\]
So Marcel is correct in stating the difference is 13.
Kara's response of 3 likely resulted from misunderstanding how to handle the negative sign. She may have misinterpreted the expression as \( 8 - 5 \), which does indeed equal 3. This misunderstanding of the subtraction of negative numbers led to her incorrect answer.
**In summary:**
Marcel is correct, and the error that likely led to Kara's incorrect answer was misunderstanding how to subtract a negative number.
\[
8 - (-5) = 8 + 5 = 13.
\]
So Marcel is correct in stating the difference is 13.
Kara's response of 3 likely resulted from misunderstanding how to handle the negative sign. She may have misinterpreted the expression as \( 8 - 5 \), which does indeed equal 3. This misunderstanding of the subtraction of negative numbers led to her incorrect answer.
**In summary:**
Marcel is correct, and the error that likely led to Kara's incorrect answer was misunderstanding how to subtract a negative number.