5) 6,8 - 1,3x = 0,6x - 2,7; 6) \(\frac{4}{9}\)x + 14 = \(\frac{1}{6}\)x + 9.

Решение:

• 5)
1. 1,3x + 0,6x = 6,8 + 2,7
2. 1,9x = 9,5
3. x = \(\frac{9,5}{1,9}\)
4. x = 5
• 6)
1. \(\frac{4}{9}\)x - \(\frac{1}{6}\)x = 9 - 14
2. \(\frac{8}{18}\)x - \(\frac{3}{18}\)x = -5
3. \(\frac{5}{18}\)x = -5
4. x = -5 \(\times\) \(\frac{18}{5}\)
5. x = -18

Ответ: 5) x = 5; 6) x = -18.