$\frac{5}{8}:\frac{7}{12}=9:x$ $9x - 60 = 210$ $x - 15\% = 8.5$
$4.5:x = 3:1.2$ $x - \frac{1}{3} + \frac{2}{3} = \frac{5}{4}$ $\frac{1}{3}:0.25 = 80\%:x$
$99x = 100 - x$ $x + 80\%x = 108$ $50\%:x = \frac{1}{3}:60$
$62.5\%x - \frac{3}{10}x = \frac{3}{20}$ $0.2x - 4.5×0.2 = 1.7$ $1.8 + 80\%x = 2$
$1.6:x = 0.125:0.5$ $16:x = 2.4:3$ $0.7:\frac{7}{8} = 7\%:x$

$x=\frac{42}{5}$ $x = 30$ $x = 8.65$
$x = 1.8$ $x=\frac{11}{12}$ $x=\frac{3}{5}$
$x = 1$ $x = 60$ $x = 90$
$x=\frac{6}{13}$ $x = 13$ $x = 0.25$
$x = 6.4$ $x = 20$ $x=\frac{7}{80}$

$65×38 - 442÷26$ $\frac{8}{15}×\frac{14}{17} + \frac{9}{17}×\frac{14}{15}$ $9.43 - 2.6 + 8.57 - 3.4$
$2 - \frac{3}{8}÷\frac{7}{16} - \frac{1}{7}$ $(1 - \frac{7}{8}×\frac{2}{7})÷\frac{5}{7}$ $(2.8 + 3.85÷3.5)×20\%$
$\frac{17}{16}×45 - \frac{7}{16}÷\frac{1}{45}$ $18÷1.5 - 6.23 + 0.77$ $24 - 48×(\frac{1}{12} + \frac{1}{16})$
$(80\% + \frac{1}{3})×5 + \frac{1}{3}$ $[\frac{2}{3} - (\frac{3}{5} - \frac{1}{6})]÷\frac{7}{3}$ $3.5×[1.5×(1.07 + 1.93)]$
$12.5×32 - 193$ $3.4×2.35 + 0.66×23.5$ $\frac{1}{12} + \frac{11}{12}÷(\frac{1}{2} - \frac{1}{3})$

$2453$ $\frac{14}{15}$ $12$
$1$ $\frac{21}{20}$ $0.78$
$\frac{225}{8}$ $6.54$ $17$
$6$ $\frac{1}{10}$ $15.75$
$207$ $23.5$ $\frac{67}{12}$