Respuesta :

taniaorozco
D = m/v     D = 2/3   v = m + 1

2/3 = m/m + 1

2/3(m + 1) = m

2(m + 1)/ 3 = m

2(m + 1) = 3m

2m + 2 = 3m

2 = 3m - 2m

2 = m 

m = 2

hope that helps, God bless!