Respuesta :
w - u = 60.....w = 60 + u
3w - 2u = 12
3(60 + u) - 2u = 12
180 + 3u - 2u = 12
3u - 2u = 12 - 180
u = -168
w = 60 + u
w = 60 - 168
w = - 108
solution is (-168,-108)
3w - 2u = 12
3(60 + u) - 2u = 12
180 + 3u - 2u = 12
3u - 2u = 12 - 180
u = -168
w = 60 + u
w = 60 - 168
w = - 108
solution is (-168,-108)