" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Carlos → x
Rodolfo → x -7
x+4 +x +x -7 = 90
3x -3 = 90
3x = 90 +3
3x = 93
x = 93/3
x = 31
Andres → x +4 → 31 +4 = 35
Carlos → x → 31
Rodolfo → x -7 → 31 -7 = 24
Carlos tiene 31 años