(x+6)-8=54 x+6-8=54 x=54-6+8 x=56
(x+6)-8=54 x+6-8=54 x=54+8-6 x=56 sprawdzenie: 56+6-8=54 54=54 L=P
(x+6)-8=54 x+6-8=54 x-2=54 /+2 x=56