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2x - wiek Kasi
x-6 wiek Wojtka 6 lat temu
2x-6 wiek Kasi 6 la temu
5 * (x-6) = 2x-6
5x-30 = 2x-6
3x = 24
x = 8 - wiek Wojtka
2*8 = 16 - wiek Kasi