$\frac{1}{3}x + \frac{1}{4}x - \frac{1}{5}x = 1\frac{8}{15}$
$\frac{20}{60}x + \frac{15}{60}x - \frac{12}{60}x = 1\frac{8}{15}$
$\frac{23}{60}x = \frac{23}{15}$
$x = \frac{23}{15} : \frac{23}{60}$
$x = \frac{23}{15} * \frac{60}{23}$
$x = \frac{1}{1} * \frac{4}{1}$
x = 4
Ответ: 4

$1\frac{8}{9}x + 2\frac{2}{15} = 4\frac{29}{30}$
$1\frac{8}{9}x = 4\frac{29}{30} - 2\frac{2}{15}$
$1\frac{8}{9}x = 4\frac{29}{30} - 2\frac{4}{30}$
$1\frac{8}{9}x = 2\frac{25}{30}$
$1\frac{8}{9}x = 2\frac{5}{6}$
$\frac{17}{9}x = \frac{17}{6}$
$x = \frac{17}{6} : \frac{17}{9}$
$x = \frac{17}{6} * \frac{9}{17}$
$x = \frac{1}{2} * \frac{3}{1}$
$x = \frac{3}{2} = 1\frac{1}{2}$
Ответ: $1\frac{1}{2}$

$2\frac{1}{3} - \frac{1}{24}x = \frac{13}{16}$
$\frac{1}{24}x = 2\frac{1}{3} - \frac{13}{16}$
$\frac{1}{24}x = 2\frac{16}{48} - \frac{39}{48}$
$\frac{1}{24}x = 1\frac{64}{48} - \frac{39}{48}$
$\frac{1}{24}x = 1\frac{25}{48}$
$x = 1\frac{25}{48} : \frac{1}{24}$
$x = \frac{73}{48} : \frac{1}{24}$
$x = \frac{73}{48} * \frac{24}{1}$
$x = \frac{73}{2} * \frac{1}{1}$
$x = \frac{73}{2} = 36\frac{1}{2}$
Ответ: $36\frac{1}{2}$

$6\frac{1}{6}x - \frac{11}{18} = \frac{5}{12}$
$6\frac{1}{6}x = \frac{5}{12} + \frac{11}{18}$
$6\frac{1}{6}x = \frac{15}{36} + \frac{22}{36}$
$6\frac{1}{6}x = \frac{37}{36}$
$x = \frac{37}{36} : 6\frac{1}{6}$
$x = \frac{37}{36} : \frac{37}{6}$
$x = \frac{37}{36} * \frac{6}{37}$
$x = \frac{1}{6} * \frac{1}{1}$
$x = \frac{1}{6}$
Ответ: $\frac{1}{6}$