Odpowiedzi

2010-03-16T16:30:06+01:00
B - wiek Basi
a - wiek Agnieszki

b - 1 = 2a - 2
b = 5 + a

b - 2a = -2 + 1
b = 5 + a

5 + a - 2a = -1
b = 5 + a

-a = -1 - 5 / : (-1)
b = 5 + a

a = 6
b = 5 + 6

a = 6
b = 11

aga ma 6 lat, a basia 11 lat.
1 1 1