二、解方程。
$1.25x ÷ 0.25 = 4$
$8.5 + 65\%x = 15$
$\frac{3}{4}x - \frac{1}{3}x = \frac{5}{9}$
$\frac{1}{3}x - 1\frac{1}{6} × \frac{6}{7} = 8$
$\frac{4}{5}x + 1 = 1\frac{2}{5}$
$2(x - 2) - 3(4x - 1) = 9(x - 1)$
$5 × 2.6x = 160$
$0.5x + 25\% = 10$

$x=0.8$ $x=10$ $x=\frac{4}{3}$ $x=27$ $x=\frac{1}{2}$ $x=\frac{8}{19}$ $x=\frac{160}{13}$ $x=19.5$