" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a+b=9 a=9-b
invertido: ba
ba=ab+9
factorizamos
10b+a=10a+b+9
9b=9a+9
b=a+1
b=9-b+1
2b=10
b=5 y a=4
numero=45