[tex]-\frac{7}{50} +\frac{7}{6} =-\frac{7\cdot3}{50\cdot3} +\frac{7\cdot25}{6\cdot25} = -\frac{21}{150}+\frac{175}{150}=\frac{154}{150} = 1\frac{4}{150} = 1\frac{2}{75}\\\\\\\frac{33}{182}-\frac{2}{3} = \frac{33\cdot3}{182\cdot3}-\frac{2\cdot182}{3\cdot182} = \frac{99}{546}-\frac{364}{546} = -\frac{265}{546}[/tex]
