" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
y-wiek brata
3*x=y
y=x+10
3x-x=10
2x=10/:2
x=5lat = wiek siostry
3*x=y
3*5=15 lat = wiek brata
Odp : siostra ma 5 lat
Dasz najj
2x = 10
x = 5
Odpowiedz SIostra ma 5 lat
s - wiek siostry
3s=b
s-10=b
b = 3s
s-10= 3s
b=3s
-2s = 10
b=3s
s= 5
b=3*5=15
s=5