1. Решите уравнения a) 9 + 5x = 34 b) 4 - 8x = 36 c) - 4x +6 - 3x = 48

Решение:

1. a) 9 + 5x = 34
   

   \( 5x = 34 - 9 \)

   
   

   \( 5x = 25 \)

   
   

   \( x = \frac{25}{5} \)

   
   

   \( x = 5 \)

   
   


2. b) 4 - 8x = 36
   

   \( -8x = 36 - 4 \)

   
   

   \( -8x = 32 \)

   
   

   \( x = \frac{32}{-8} \)

   
   

   \( x = -4 \)

   
   


3. c) - 4x + 6 - 3x = 48
   

   \( -7x + 6 = 48 \)

   
   

   \( -7x = 48 - 6 \)

   
   

   \( -7x = 42 \)

   
   

   \( x = \frac{42}{-7} \)

   
   

   \( x = -6 \)

   
   

Ответ: a) x = 5, b) x = -4, c) x = -6.