Odpowiedź:
a)
[tex] \frac{2x + 3}{5} = \frac{2 - x}{3} - x | \times 15 \\ 6x + 9 = 10 - 5x - 15x = \\ 6x + 9 = 10 - 20x | - 6x \\ 9 = 10 - 26x \\ 26x = 1 \\ x = \frac{1}{26} [/tex]
b)
[tex] \frac{x + 1}{2} - \frac{x - 1}{3} = \frac{1}{4} | \times 12 \\ 6x + 6 - 4x + 4 = 3 \\ 2x + 10 = 3 | - 10 \\ x = -3.5[/tex]
c)
[tex] \frac{4x + 7}{2} - \frac{5x - 1}{6} = x + 5 | \times 6 \\ 12x + 21 - 5x + 1 = 6x + 30 \\ 7x + 22 = 6x + 30 | - 6x \\ x +22 = 30 \\ x = 8[/tex]
d)
[tex] \frac{x + 5}{4} - \frac{2x + 1}{8} = \frac{1}{2} (2 - x) | \times 8 \\ 2x + 10 - 2x - 1 = 8 - 4x \\ 9 = 8 - 4x | + 4x \\ 4x + 9 = 8 | - 9 \\ 4x = - 1 \\ x = - \frac{1}{4} [/tex]
