3. Решите уравнение: 1) x + 10 = 4; 2) x + 2,8 = -8,6; 3) 5,2 - x = 14,7; 4) -5,4 - x = -3,5; 5) x - 4,7 = -2,34; 6) x + \(\frac{7}{16}\) = \(\frac{3}{8}\).

Решение:

1. \(x + 10 = 4\)
   \(x = 4 - 10\)
   \(x = -6\)
2. \(x + 2,8 = -8,6\)
   \(x = -8,6 - 2,8\)
   \(x = -11,4\)
3. \(5,2 - x = 14,7\)
   \(-x = 14,7 - 5,2\)
   \(-x = 9,5\)
   \(x = -9,5\)
4. \(-5,4 - x = -3,5\)
   \(-x = -3,5 + 5,4\)
   \(-x = 1,9\)
   \(x = -1,9\)
5. \(x - 4,7 = -2,34\)
   \(x = -2,34 + 4,7\)
   \(x = 2,36\)
6. \(x + \(\frac{7}{16}\) = \(\frac{3}{8}\)
   \(x = \(\frac{3}{8}\) - \(\frac{7}{16}\)
   \(x = \(\frac{3 \cdot 2}{8 \cdot 2}\) - \(\frac{7}{16}\)
   \(x = \(\frac{6}{16}\) - \(\frac{7}{16}\)
   \(x = -\(\frac{1}{16}\)\)

Ответ: 1) -6; 2) -11,4; 3) -9,5; 4) -1,9; 5) 2,36; 6) -\(\frac{1}{16}\).