1. 2 + 3x = -2x - 13 2. 1 - 7(4+2x) = -9 - 4x 3. -x - 2 + 3(4-x) - 3

Решение:

1. \( 2 + 3x = -2x - 13 \)
   
   
   \( 3x + 2x = -13 - 2 \)
   
   
   \( 5x = -15 \)
   
   
   \( x = \frac{-15}{5} \)
   
   
   \( x = -3 \)


2. \( 1 - 7(4+2x) = -9 - 4x \)
   
   
   \( 1 - 28 - 14x = -9 - 4x \)
   
   
   \( -27 - 14x = -9 - 4x \)
   
   
   \( -14x + 4x = -9 + 27 \)
   
   
   \( -10x = 18 \)
   
   
   \( x = \frac{18}{-10} \)
   
   
   \( x = -1.8 \)


3. \( -x - 2 + 3(4-x) - 3 \)
   
   
   \( -x - 2 + 12 - 3x - 3 \)
   
   
   \( -x - 3x - 2 + 12 - 3 \)
   
   
   \( -4x + 7 \)

Ответ: 1. x = -3; 2. x = -1.8; 3. -4x + 7