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x+3-edek
x+6-ewa
x+3+x+6=29
2x+9=29
2x=20
x=10
Ala ma 10 lat; P
Licze na naj ;)
x + 3 - wiek edka
x + 6 = wiek Ewy
x + 3 + x+6 = 29
2x = 29 - 9
2x = 20
x = 10 < --- odp.