\[\frac{x + 2}{4} - \frac{x}{3} = 7\ \ \ \ |*12\]
\[3(x + 2) - 4 \cdot x = 7 \cdot 12\]
\[3x + 6 - 4x = 84\]
\[- x = 78\]
\[x = - 78\]
\[Ответ:\ x - - 78.\]