Odpowiedź:
[tex]Zadanie[/tex] [tex]1[/tex]
[tex]a) 4x - 7 = 17 = 4x = 17 + 7 = 4x = 24 = x=6[/tex]
[tex]b) 8,5 + 3y = -5,3 = 3y = -5,3 - 8,5 = 3y = -13,8 = y = -4,6[/tex]
[tex]c) 8x - 6 - 4x = 14 = 4x - 6 = 14 = 4x = 14 + 6 = 4x = 20 = x = 5[/tex]
[tex]Zadanie[/tex] [tex]2[/tex]
[tex]a) 3 * 4x - 9 = 7 = 12x - 9 = 7 = 12x = 7+ 9 = 12x = 16 = x = \frac{4}{3}[/tex]
[tex]b) 6x - 4x + 7 = 1 = 2x + 7 = 1 = 2x = 1 - 7 = 2x = -6 = x = -3[/tex]
[tex]c) \frac{8x - 4x}{2} = 8 = \frac{4x}{2} = 8 = 2x = 8 = x = 4[/tex]
[tex]d) \frac{3}{5} x + 7 - x = 9 = 3x + 35 - 5x = 45 = -2x + 35 = 45 = -2x = 45 - 35 = -2x =10 = x = -5[/tex]
[tex]Pozdrawiam[/tex] [tex]serdecznie[/tex]
