Respuesta :

Answer:

B. 50

Step-by-step explanation:

Cosrt

Answer:

B. 50

Step-by-step explanation:

52 = 4/5m + 12

52 - 12 = 4/5m

40 = 4/5m

40 : 4/5 = m

40 x 5/4 = m

200/4 = m

50 = m