" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
r+10 = 3(d-10) ec. 2
De la ec. 1:
d= r-5-5 = r-10 ec. 3
Sustituyendo valores e la ec. 3 en la ec. 2:
r+10 = 3((r-10)-10)
r+10 = 3(r-20)
r+10 = 3r-60
r-3r = -60-10
-2r = -70
r = -70/-2
r = 35
De la ec. 3:
d = r-10
d = 35-10
d = 25
Comprobando en ec. 2:
r+10 = 3(d-10)
35+10 = 3(25-10)
45 = 3*15 comprobado
Por tanto:
Rodolfo tiene 35 canicas.
Saludos.......