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y - wiek taty
z - wiek syna
x+y+z=93
z=x/3
x=y-2
x+y+z=93
z=x/3
y=x+2
x+x+2+x/3=93 |*3
3x+3x+6+x=279
7x=279-6
7x=273
x=39
39=y-2
y=39+2
y=41
z=39/3
z=13
7X = 91
x = 13 - Tyle lat ma syn
39 - Tyle lat ma matka
41 lat ma tata
Jest dobrze