Respuestas

2013-11-20T08:09:38+01:00
X = 10 -5y / 4

x = 5 -3y

( 10 -5y ) / 4 = 5 -3y

10 -5y = 20 -12y

7y = 10

y = 10 /7

x = 5 - 30 / 7 = 5 / 7