Respuesta :

Answer:

The answer is B.

Step-by-step explanation:

r- (-12.4) = -15.8

r + 12.4 = -15.8

   -12.4     -12.4

r = -28.2

Cosrt

Answer:

B. -28.2

Step-by-step explanation:

r - (-12.4) = -15.8

r + 12.4 = -15.8

r = -15.8 - 12.4

r = -28.2