Respuesta :

Answer:

c.19 + -27

Step-by-step explanation:

you do kcc (keep change change) and you keep the first number flip the sign and then change the positive 2 a negative

gmany

Answer:

c. 19 + -27

Step-by-step explanation:

We know:

a - b = a + (-b)

a + b = b + a

19 - 27 = 19 + (-27) = (-27) + 19 = -27 + 19