Помогите решить уравнение 607 задание

$\frac{x- \frac{3}{4} }{ \frac{3}{8} - \frac{1}{6} } =6 \\ \\ x- \frac{3}{4} =6*( \frac{3}{8} - \frac{1}{6} ) \\ \\ x- \frac{3}{4} = 2\frac{1}{4} -1 \\ \\ x= \frac{3}{4} -1 \frac{1}{4} \\ \\ x=- \frac{2}{4} =- \frac{1}{2} \\ \\ \\ 2)\\ \\ \frac{x- \frac{7}{15} }{ \frac{3}{4}- \frac{1}{2} } =-4 \\ \\ x- \frac{7}{15}=-4( \frac{3}{4} - \frac{2}{4} ) \\ \\ x- \frac{7}{15} =-1 \\ \\ x=-1+ \frac{7}{15} \\ \\ x=- \frac{8}{15} \\ \\ \\ 3) \\ \\ [tex] \\ \\$ $\\ \\$ $\\ \frac{ \frac{2}{5}+ x}{ \frac{2}{3} - \frac{1}{6} } =-2 \\ \\ \frac{ \frac{2}{5}+ x}{ \frac{4}{6} - \frac{1}{6} } =-2 \\ \\ \frac{ \frac{2}{5}+ x}{ \frac{1}{2} } =-2 \\ \\ \frac{2}{5}+x=-2:2 \\ \\ x=-1- \frac{2}{5} \\ \\ x=-1 \frac{2}{5}$ [/tex]