7. Решите уравнение: 1) -6x = 48; 2) 0,8x = -3,2; 3) -1,6x = -6,4; 4) 1/7 x = -3/14;

1) \(-6x = 48\) \(x = \frac{48}{-6}\) \(x = -8\) 2) \(0,8x = -3,2\) \(x = \frac{-3,2}{0,8}\) \(x = -4\) 3) \(-1,6x = -6,4\) \(x = \frac{-6,4}{-1,6}\) \(x = 4\) 4) \(\frac{1}{7}x = -\frac{3}{14}\) \(x = -\frac{3}{14} : \frac{1}{7}\) \(x = -\frac{3}{14} \cdot 7\) \(x = -\frac{3}{2}\) \(x = -1,5\)