" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
y- cyfra jedności
x+y=13
10x+y=10y+x+27
x=13-y
10(13-y)+y=10y+13-y+27
x=13-y
130-10y+y=9y+13+27
x=13-y
-18y=-90 /:(-18)
y=5
x=13-5
y=8
Odp:Jest to liczba 85