\[\boxed{\text{1032\ (1032).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[x = 10 - y\text{\ \ }\]
\[y = 10 - x\]
\[x = \frac{7 - y}{2} = 3,5 - 0,5y\ \]
\[y = 7 - 2x\]
\[x = y + 4\ \]
\[y = - 4 + x\]
\[x = 1 + 6y\ \ \]
\[y = \frac{x - 1}{6} = \frac{1}{6}x - \frac{1}{6}\]
\[x = \frac{5y}{4} = 1\frac{1}{4}\text{y\ \ }\]
\[y = \frac{4x}{5} = 0,8x\]
\[x = \frac{- 12 - 3y}{4} = - 3 - \frac{3}{4}\text{y\ \ }\]
\[y = \frac{- 12 - 4x}{3} = - 4 - 1\frac{1}{3}x\]