" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x + ( - 18) + 25 = - 12 Para quitar el parentesis aplicas ley de
signos + por - = -
x - 18 + 25 = - 12
x + 7 = - 12
x = - 12 - 7
x = - 19
(-) (-) = +
(-) (+) = -
(+) (-) = -
(+) (+) = +
................................................
x + (- 18) + 25 = - 12
x - 18 + 25 = - 12
x + 7 = - 12
x = - 12 - 7
x = - 19