1. 2(x-4) + 4 = 2(3 + x) spatse 2.8(x-2)+2=5171x) 3. 4x + 112-3x) = 8-5x 3x + 5 + (x + 5)=(1-x)+4 H 5. -918-9x)=4x+5

Решение:

1. 2(x - 4) + 4 = 2(3 + x) 2x - 8 + 4 = 6 + 2x 2x - 4 = 6 + 2x 2x - 2x = 6 + 4 0 = 10 (неверно)

   Уравнение не имеет решений.

2. 8(x - 2) + 2 = 5(7 + x) 8x - 16 + 2 = 35 + 5x 8x - 14 = 35 + 5x 8x - 5x = 35 + 14 3x = 49 x = \(\frac{49}{3}\)

   Ответ: x = \(\frac{49}{3}\)

3. 4x + (12 - 3x) = 8 - 5x 4x + 12 - 3x = 8 - 5x x + 12 = 8 - 5x x + 5x = 8 - 12 6x = -4 x = \(-\frac{4}{6} = -\frac{2}{3}\)

   Ответ: x = \(-\frac{2}{3}\)

4. 3x + 5 + (x + 5) = (1 - x) + 4 3x + 5 + x + 5 = 1 - x + 4 4x + 10 = 5 - x 4x + x = 5 - 10 5x = -5 x = -1

   Ответ: x = -1

5. -9(8 - 9x) = 4x + 5 -72 + 81x = 4x + 5 81x - 4x = 5 + 72 77x = 77 x = 1

   Ответ: x = 1