Odpowiedź :
[tex]a)\\3x-7 = 11\\\\3x = 11+7\\\\3x = 18 \ \ /:3\\\\x = 6[/tex]
[tex]b)\\5(3x-1) = -2(x-6)\\\\15x-5 = -2x+12\\\\15x+2x = 12+5\\\\17x = 17 \ \ /:17\\\\x = 1[/tex]
[tex]a)\\3x-7 = 11\\\\3x = 11+7\\\\3x = 18 \ \ /:3\\\\x = 6[/tex]
[tex]b)\\5(3x-1) = -2(x-6)\\\\15x-5 = -2x+12\\\\15x+2x = 12+5\\\\17x = 17 \ \ /:17\\\\x = 1[/tex]