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ojciec- 32 lat
y- lata syna
x-8=y+12
x+12=2(12+y)
x-y=12+8
x=24+2y-12
12+2y-y=20
Y=20-12= 8 lata syna
X+12=24+2y
X=24-12+2*8=36lata ojca