Question

Marcus says that 8.7-12.4 is equal to 16.3 Explain why this is not correct

Answer 1

It's not correct because 8.7 - 12.4. = -3.7. Therefore, one must subtract

Answer 2

His answer is positive while the actual answer is negative.

Explanation:

Real answer:8.7-12.4=-3.7

His answer does not match up with the actual answer.