2(5 − 3x) = 6 − 5x
10 − 6x = 6 − 5x
−6x + 5x = 6 − 10
−x = −4
x = 4

2(1 − x) − 4(2x + 8) = 8x + 28
2 − 2x − 8x − 32 = 8x + 28
−2x − 8x − 8x = 28 − 2 + 32
−18x = 58
$x = -\frac{58}{18}$
$x = -\frac{29}{9} = -3\frac{2}{9}$

$\frac{1}{2} + \frac{1}{4}x = x - \frac{3}{4}$
$\frac{1}{4}x - \frac{4}{4}x = -\frac{3}{4} - \frac{2}{4}$
$-\frac{3}{4}x = -\frac{5}{4}$
$x = \frac{5}{4} : \frac{3}{4}$
$x = \frac{5}{4} * \frac{4}{3}$
$x = \frac{5}{1} * \frac{1}{3}$
$x = 1\frac{2}{3}$