" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
19 -12 = x
7 = x
Ahora lo reemplazamos para comprobar
19 = x +12
19 = 7 + 12
19 = 19
Entonces x = 7
-x=-7
x=7
Comprobamos:
19=7+12
19=19
Saludos