[tex]a)18x - 5x = 13x \\ b)10 - (x - 4) = 10 - x + 4 = 14 - x \\ c)6x(x + 4y - 1) = 6 {x}^{2} + 24xy - 6x \\ d) \frac{25x}{5} = 5x[/tex]
[tex]e) \frac{32x - 16y + 8}{8} = \frac{8(3x - 2y + 1)}{8} = 3x - 2y + 1 \\ f)(4x + 3) + (5 - 6x) = 4x + 3 + 5 - 6x = - 2x + 8 \\ g)(x + 2)(x - 3) = {x}^{2} - 3x + 2x - 6 = {x}^{2} - x - 6[/tex]
[tex]h)4x + 5 - \frac{15x - 18}{3} = 4x + 5 - \frac{3(5x - 6)}{3} = 4x + 5 - (5x - 6) = 4x + 5 - 5x + 6 = - x + 11[/tex]
