" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x-5=½(x+5)
½x=7½
x=15
odp; obecny wiek to 15 lat
x - 5 = (x + 5):2
Rozwiązanie:
15 - 5 = (15 + 5):2
x - obecny wiek - 15 lat