Step-by-step explanation:
A) 3x + 8 = 23
 3x = 23 - 8
 3x = 15 
 x = 15 / 3 = 5
B) 5x + 1 = 3x + 17
 5x - 3x = 17 - 1
 2x = 16
 x = 16 /2 = 8
C) 4 (x+2) = 32
 4x + 8 = 32
 4x = 32 - 8
 4x = 24
 x = 24 / 4 = 6
 
        
             
        
        
        
To solve this problem you must apply the proccedure shown below:
 1. She has a total of 50 DVDs of 90 minutes each one of them. The cost of each DVD was 11€.
 2. Therefore, to calculate the total cost of the collection, you must multiply the cost of each DVD by the total number of them:
  €
€
 3. To calculate the total minutes of the collection, you must multiply 90 minutes by the total number of DVDs:
 
 Therefore, the answer is: 550€ and 4500 minutes.
 
        
             
        
        
        
Answer:
w = 21 
Step-by-step explanation:
i've done this kind of thing before a million times
 
        
             
        
        
        
The answer would be 
x = 160/147 
or 
x = 1 and 13/147