Respuesta :
J = 2L
B = 5L - 60
J = B
2L = 5L - 60
2L - 5L = - 60
-3L = -60
L = -60/-3
L = 20 <==== Louis has 20 dvd's
B = 5L - 60
J = B
2L = 5L - 60
2L - 5L = - 60
-3L = -60
L = -60/-3
L = 20 <==== Louis has 20 dvd's