[tex]5x = 10x - 2(x + 5) \\ 5x = 10x - 2x - 10 \\ - 3x = - 10 \\ x = \frac{10}{3} [/tex]
[tex] - 4(2x - 5) = 2(3x + 7) \\ - 8x + 20 = 6x + 14 \\ - 14x = - 6 \\ x = \frac{6}{14} = \frac{3}{7} [/tex]
[tex] - 5(2 - x) = 3 - (x - 1) \\ - 10 + 5x = 3 - x + 1 \\ 6x = 14 \\ x = \frac{14}{6} [/tex]
[tex]x = 7(x - 1) - 4(3 - x) \\ x = 7x - 7 - 12 + 4x \\ - 10x = - 19 \\ x = \frac{19}{10} = 1.9[/tex]
