Odpowiedź :
3)
Magda 2x = 18
Kuba x = 9
Agata x + 6 = 15
2x + x + x + 6 = 42
4x + 6 = 42
4x = 42 - 6
4x = 36
x = 9
4) Kot = x = 7
wiktor = 6x = 42
7x = 49
x = 7
5) niewiem sorki
3)
Magda 2x = 18
Kuba x = 9
Agata x + 6 = 15
2x + x + x + 6 = 42
4x + 6 = 42
4x = 42 - 6
4x = 36
x = 9
4) Kot = x = 7
wiktor = 6x = 42
7x = 49
x = 7
5) niewiem sorki