EQUAZIONI NUMERICHE

$\frac{2 x^{3} + 4 x^{2} + 18}{x^{2} + 8 x + 15} + \frac{2 x + 2}{x + 3} + 1 = \frac{15 - 9 x}{x + 5} + 2 x$ (R: x=1)
$\frac{2 x^{2} + 1}{x^{2} - x - 20} + 6 x + 2 = \frac{6 x^{2} - 26 x - 15}{x - 5}$ (R: x=7)
$\frac{3 x + 3}{2 x} + \frac{5 x^{2} + 4 x + 1}{(x - 2)} = \frac{61 x - 116}{2 {(x - 2)}^{2}} + 5 x + \frac{31}{2}$ (R: x=1)
$\frac{x}{x^{3} - 2 x^{2} + x - 2} - \frac{2}{x^{3} + x^{2} + x + 1} = \frac{1}{x^{2} - x - 2}$ (R: x=3)
$[\frac{x}{{(2 x - 1)}^{2} - 9} + \frac{1}{2 - x}] : [(3 + \frac{4}{x}) : (1 + \frac{1}{x})] = \frac{1}{16}$ (R: x=-2)
$\frac{1}{x} - \frac{2}{x + 2} = - \frac{1}{x - 3}$ (R: $x = \frac{6}{7}$ )
$\frac{3}{x} - \frac{1}{x + 2} = \frac{4}{x^{2} + 2 x}$ (R: x=-1)
$\frac{1}{x - 2} - \frac{1}{x} - \frac{1}{x + 2} = - \frac{x}{x^{2} - 4}$ (R: x=-1)
$\frac{1}{2 x - 1} - \frac{1}{1 - 4 x^{2}} = \frac{2}{2 x + 1}$ (R: x=2)
$\frac{1}{x^{3} - 2 x^{2} - x + 2} + \frac{1}{x^{2} - 3 x + 2} = \frac{3}{x^{2} - x - 2}$ (R: $x = \frac{5}{2}$ )