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y - wiek macka
x=4y
x+2 = 3(y+2)
x=4y
x+2 = 3y + 6
x=4y
x-3y= 4
4y - 3y = 4
y=4
x=4 * 4 = 16
Odp : Dorota ma 16 lat , a maciek 4