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
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