Odpowiedź :
1.
[tex]7x = 35 \ \ /:7\\\\\boxed{x = 5}[/tex]
[tex]Spr.\\L = 7\cdot 5 = 35\\P = 35\\L = P[/tex]
2.
[tex]4x - 5 = 19 \ \ \ |+5\\\\4x = 24 \ \ /:4\\\\\boxed{x = 6}[/tex]
[tex]Spr.\\L = 4\cdot6 - 5 = 24 - 5 = 19\\P = 19\\L = P[/tex]
1.
[tex]7x = 35 \ \ /:7\\\\\boxed{x = 5}[/tex]
[tex]Spr.\\L = 7\cdot 5 = 35\\P = 35\\L = P[/tex]
2.
[tex]4x - 5 = 19 \ \ \ |+5\\\\4x = 24 \ \ /:4\\\\\boxed{x = 6}[/tex]
[tex]Spr.\\L = 4\cdot6 - 5 = 24 - 5 = 19\\P = 19\\L = P[/tex]