[tex] \frac{ \frac{5}{10} : \frac{125}{100} + \frac{7}{5} : \frac{11}{7} - x}{( \frac{225}{100} + \: ^{25)} \frac{1}{4} ): \frac{55}{3} } = \frac{68}{3} = >
[/tex]
[tex] \frac{ \frac{5}{10} \cdot \frac{100}{125} + \frac{7}{5} \cdot \frac{7}{11} - x}{( \frac{225}{100} + \frac{25}{100} ): \frac{55}{3} } = \frac{68}{3} = >
[/tex]
[tex] \frac{ \frac{10}{25} + \frac{49}{55} - \: x }{ \frac{250}{100} \cdot \frac{3}{55} } = \frac{68}{3} = >
[/tex]
[tex] \frac{ \: ^{11)} \frac{2}{5} + \frac{49}{55} - \: ^{55)} x}{ \frac{3}{22} } = \frac{68}{3} = >
[/tex]
[tex] \frac{ \frac{22}{55} + \frac{49}{55} - \frac{55x}{55} }{ \frac{3}{22} } = \frac{68}{ 3} = >
[/tex]
[tex] \frac{ \frac{71}{55} - \frac{55x}{55} }{ \frac{3}{22} } = \frac{68}{3} = >
[/tex]
[tex] \frac{ \frac{71 - 55x}{55} }{ \frac{3}{22} } = \frac{68}{3} = >
[/tex]
[tex] \frac{71 - 55x}{55} : \frac{3}{22} = \frac{68}{3} = >
[/tex]
[tex] \frac{71 - 55x}{55} \cdot \frac{22}{3} = \frac{68}{3} = >
[/tex]
[tex]2( \frac{71 - 55x}{15} ) = \: ^{5)} \frac{68}{3} = >
[/tex]
[tex] \frac{142 - 110x}{15} = \frac{340}{15} = >
[/tex]
[tex]142 - 110x = 340 = >
[/tex]
[tex] - 110x = 340 - 142 = >
[/tex]
[tex] - 110x = 198 = >
[/tex]
[tex]x = \frac{198}{ - 110} ^{(2} = >
[/tex]
[tex]x = \frac{99}{ - 55} ^{(11} = >
[/tex]
[tex]x = - \frac{9}{5} [/tex]
[tex]S= \{ - \frac{9}{5} \}[/tex]
