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4x-wiek Wojtka
4x+2=3(x+2)
4x+2=3x+6
4x-3x=6-2
x=4
4x=4 *4=16
Odp: Wojtek ma 16 lat a Ania 4 lata.
y - Ania
x = 4y
x + 2 = (y+2) *3
x = 4y
4y + 2 = 3y + 6
x = 4y
y= 4
x=16
y=4
odp. Wojtek ma 16 lat, a Ania 4.