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36/3=12
12-6=6
24-6=18 agatka ma 6 lat a jacek 18
j-Jacek
a+j=24
(a+6)*3=j+6
to jest układ równań
a=24-j
(24-j+6)*3=j+6
90-3j=j+6
4j=84
j=21
a=3
2.m-matka c-córka
m+c=32
2*(c+14)=m+14
m=32-c
2c+28=32-c+14
3c=18
c=6
m=26