Respuesta :

Answer:

m = .8

Step-by-step explanation:

4(1+0.5m)=7m

Distribute

4+ 2m = 7m

Subtract 2m from each side

4+2m-2m = 7m-2m

4 = 5m

Divide each side by 5

4/5 = 5m/5

.8 =m