" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Zatem:
3 * x -> wiek Wojtka
x - 3 -> wiek Asi
x + 3 * x + (x - 3) = 22
5 * x - 3 = 22
5 * x = 25
x = 5
Wojtek: 3 * x = 3 * 5 = 15
Asia: x - 3 = 5 - 3 = 2
Odp. Kasia ma 5 lat, Wojtek ma 15 lat, a Asia ma 2 lata.
x - Kasia
x-3 Asia
3x+x+x-3=22
3x+2x=22+3
5x=25/5
x=5
więc Wojtek 15 lat; Kasia 5 lat a Asia 2 lata