Odpowiedź:
[tex]16 + 5x = 41 \\ 5x = 41 - 16 \\ 5x = 25 \\ x = 25 \div 5 \\ x = 5[/tex]
[tex]4y - 6.4 = - 25.6 \\ 4y = - 25.6 + 6.4 \\ 4y = - 19.2 \\ y = - 19.2 \div 4 \\ y = - 4.8[/tex]
[tex]8x - 5 - 6x = 7 \\ 2x - 5 = 7 \\ 2x = 7 + 5 \\ 2x = 12 \\ x = 12 \div 2 \\ x = 6[/tex]
