Question

Express as a difference: a+b, a+5

Answer 1

The answer is a-(-b)

Explanation:

It says difference, so you delete plus sign with minus sign

Answer 2

a - (-b), a - (-5)

Explanation:

A double negative negative is a positive, so a - (-b) = a + b, and a - (-5) is a + 5. However, a double negative is still a difference, so this answer works.