Zadanie 2
x - wiek Agnieszki
3·x - Wiek Tomka
3x + 4 = x + 4 + 4
3x + 4 = x + 8 l -4
3x = x + 4 l -x
2x = 4 l :2
x = 2 lata - wiek Agnieszki
3x = 3 · 2 = 6 lat - wiek Tomka
Odp. Agnieszka ma 2 lata
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Zadanie 2
x - wiek Agnieszki
3·x - Wiek Tomka
3x + 4 = x + 4 + 4
3x + 4 = x + 8 l -4
3x = x + 4 l -x
2x = 4 l :2
x = 2 lata - wiek Agnieszki
3x = 3 · 2 = 6 lat - wiek Tomka
Odp. Agnieszka ma 2 lata