Respuesta :

Answer: 3

Step-by-step explanation:

PrincessOfAnswers

Answer: 3 equations

Step-by-step explanation:

The 4th one doesn’t work for both pairs.

1st : 3 - 7 = -4 | 5 x 2 = 10 5 x 4 = 20

10 - 20 = -10.  

-4 does not equal -10

2nd equation : -7 - 7 = -14  

5 x 4 = 20| 5 x 4 = 20 20 - 20 = 0

-14 does not equal 0