" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2c=3a
wyznaczasz sobie z pierwszego c
c=27-3a
podstawiasz do 2 rowniania to c, czyli
2x(27-3a)=3a
2x27-2x3a=3a
54-6a=3a
54=9a
a=6
skro masz a to za a to jestes w domu ;)
2c=3a
2c=3x6
2c=18
c=9
i koniec ;)
3a=2c /×(-1)
3a+c=27
-3a+2c=0
3c=27 /÷3
c=9
3a+c=27
3a+9=27
3a=18
a=6