[tex]a)4x - 7 = 2x + 9 \\ 4x - 2x = 9 + 7 \\ 2x = 16 \\ x = 8[/tex]
[tex]b)3 - 8x = 18 - 3x \\ - 8x + 3x = 18 - 3 \\ - 5x = 15 \\ x = - 3[/tex]
[tex]c)2 - x = 12 + 7x \\ - x - 7x = 12 - 2 \\ - 8x = 10 \\ x = - \frac{10}{8} [/tex]
[tex]d)3x + 5x - 6 = 6x + 2 \\ 8x - 6 = 6x + 2 \\ 8x - 6x = 2 + 6 \\ 2x = 8 \\ x = \frac{8}{2} = 4[/tex]
[tex]e)5 - 9x + 6 = 2x + 14 - x \\ - 9x + 11 = x + 14 \\ - 9x - x = 14 - 11 \\ - 10x = 3 \\ x = - \frac{3}{10} [/tex]
