Respuesta :

Answer:

m = 2.5

Step-by-step explanation:

Add 0.8 m to both sides, obtaining 0.8m + 0.8m - 4, or 1.6m - 4 = 0.

Now add 4 to both sides.  Result:  1.6m = 4, and m = 4/1.6 = 2.5 = m

Answer:

2.5

Step-by-step explanation: