Respuesta :

Answer: C

Step-by-step explanation:

-100-_= 45

-100+145= 45

Negative plus negative equals a positive sign

Answer:

c) - 145

Step-by-step explanation:

-100 - x =  45

       -x  = 45 + 100

       -x = 145

         x =  145 / (-1)

         x = -145