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x+25
x+x+25 = 45
2x = 45-25
2x = 20
x=10
napewno dobrze ;]
x + 25 wiek ojca
x + x + 25 = 45
2x = 45 - 25
2x = 20 / ÷2
x = 10
spr.
10 - wiek Bartka
10 + 25 = 35 - wiek ojca
10 + 35 = 45
odp: Bartek ma 10 lat, a jego ojciec 35