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y-obecny wiek matki
x+3=3(y+3)
x-2=4(y-2)
x+3=3y+9
x-2=4y-8
x=3y+6
x=4y-6
3y+6=4y-6
12=y
x=3*12+6=42
Odp. Matka ma 42 lata, a córka 12 lat.