Respuesta:
3/2x - 2/5 - 1/4 x = 7 - 1/3 x
3/2x-1/4 x+1/3 x= 7+2/5
(18-3+4)/12 x= 37/5
19/12 x = 37/5
x= 37/5 / 19/12
x= 444/95
