" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
sea x el nimero
2x - 7 = 9
2x = 9+7
2x = 16
x= 16/2
x = 8
saludos
El doble del número = 2z
Resolvemos :
2z - 7 = 9
2z = 9 + 7
2z = 16
z = 16/2
z = 8
Solución : El número es 8