" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
3x - 2x = 5x
3x - 2x - 5x = 0
3x - 7x = 0
-4x = 0
x = -4
esto no es identidad
2x + 3 = 2x - 6
2x - 2x = - 6 - 3
0 = - 9
tampoco es identidad