Răspuns:
(909-45×6-m)-(811-43×5-5)=42
(909-270-m)-(811-43×5-5)=42
(639-m)-(811-43×5-5)=42
(639-m)-(811-215-5)=42
(639-m)-(596-5)=42
(639-m)-591=42
639-m=42+591
639-m=633
m=639-633
m=6
Verificare:
(909-45×6-6)-(811-43×5-5)=
(909-270-6)-(811-215-5)=
(639-6)-(596-5)=
633-591= 42
Sper că te-am ajutat! Coroană?
