\[y - 2\frac{5}{12} = - 3\frac{7}{15}\]
\[y = - 3\frac{7^{\backslash 4}}{15} + 2\frac{5^{\backslash 5}}{12}\]
\[y = - 3\frac{28}{60} + 2\frac{25}{60}\]
\[y = - 1\frac{3}{60} = - 1\frac{1}{20}\]
\[y = - 1,05.\]