a.

[tex]4x + 7 = 2x + 16 \\ 4x - 2x = - 7 + 16 \\ 2x = 9 \ \\ \frac{2x}{2} = \frac{9}{2} \\ x = 4.5 [/tex]

c.

[tex] - 3x - 8 = - 7 x - 4 \\ - 3x + 7x = 8 - 4 \\ 4x = 4 \\ \frac{4x}{4} = \frac{4}{4} \\ x = 1 [/tex]

e.

[tex]7x - 6 = 6x + 3 \\ 7x - 6x = 6 + 3 \\ x = 9[/tex]

b.

[tex]x - 2 = 10 - 5x \\ x + 5x = 2 + 10 \\ 6x = 12 \\ \frac{6x}{6} = \frac{12}{6} \\ x = 2[/tex]