Question

12 ? -15 = 27
24 ? 3/4 = 18

Answer 1

- & ×

Explanation:

If we were to put 12 - (-15), the two - would convert to a single +. Thus, the answer should be 12 + 15 which is 27.

If we were to put 24 ×
`(3)/(4)`, we would have to multiply 24 by 3 and divide the answer by 4, which is 18.

Answer 2

Answer
12- -15=27
24 * 3/4=18

Hope this helps