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2x-wiek córki
4*2=8x-wiek matki
x+2x+8x=44
11x=44
x=44:11
x=4
2x=8
8x=32
0,5c=s
m=4c
metoda podstawiania
4c+0,5c+c=44
5,5c=44
c=8
córka 8lat
syn 4lata
matka 32 lata