Odpowiedź:
[tex]f) \frac{x}{2} = \frac{2}{5} (4-x)-4 = \frac{x}{2} = \frac{8}{5} - \frac{2}{5} x - 4 = \frac{x}{2} = -\frac{12}{5} - \frac{2}{5} x = 5x = -24-4x = 5x + 4x = -24 = 9x = -24 = x = -\frac{8}{3}[/tex]
[tex]g) \frac{2x-1}{5} - \frac{x-2}{2} = 0,7x = \frac{2x-1}{5} - \frac{x-2}{2} = \frac{7}{10} x = 2(2x-1)-5(x-2)= 7x = 4x - 2-5x + 10=7x= -x+8=7x = -x-7x=-8= -8x=-8=\\x=1[/tex]
[tex]h) 2x - \frac{3x+5}{4} = - \frac{1}{4} x - 1= 8x - (3x+5) = -x-4 = 8x - 3x - 5= -x-4= 5x-5= -x-4= 5x+x=-4+5 = 6x=1 =x=\frac{1}{6}[/tex]
Szczegółowe wyjaśnienie:
