Question

John solved the following problem incorrectly. What was his mistake? What is the correct answer?

John’s Work:
3/8+(−2/5)=1/40
Your Work:
PUT HERE.
John’s Mistake:
PUT HERE.

Answer 1

John's mistake was adding the fractions incorrectly. The correct answer is -1/40.

Step-by-step explanation:

John's mistake is that he incorrectly added the fractions together. The correct way to add fractions is to find a common denominator, which in this case is 40. So, the correct answer is 3/8 + (-2/5) = 15/40 + (-16/40) = -1/40.