Найти x из пропорции

Ответ:

$\dfrac{3,6}{14-15\frac{1}{8}:2,2}=\dfrac{x}{1,5+2\frac{2}{3}+3,75}\\\\\\\dfrac{3,6}{14-\frac{121}{8}:\frac{2,2}{10}}=\dfrac{x}{5,25+\frac{8}{3}}\\\\\\\dfrac{3,6}{14-\frac{121}{8}\cdot \frac{10}{22}}=\dfrac{x}{\frac{21}{4}+\frac{8}{3}}\\\\\\\dfrac{\frac{36}{10}}{14-\frac{11\cdot 5}{8}}=\dfrac{x}{\frac{95}{12}}\\\\\\\dfrac{18}{5\cdot \frac{57}{8}}=\dfrac{12\cdot x}{95}\\\\\\\dfrac{18\cdot 8}{5\cdot 57}=\dfrac{12\cdot x}{95}\\\\\\x=\dfrac{18\cdot 8\cdot 95}{5\cdot 57\cdot 12}$

$x=\dfrac{(2\cdot 9)\cdot 8\cdot (5\cdot 19)}{5\cdot (3\cdot 19)\cdot (2\cdot 6)}=\dfrac{9\cdot 8}{3\cdot 6}=\dfrac{3\cdot 8}{6}=4\\\\\\x=4$