-4
Because 15x-7x= 8x
8x+5x= 13x
13x= -52
-52 / 13= -4
x = -4
        
                    
             
        
        
        
Which of the following smallest values
        
             
        
        
        
And whats the rest of the question
        
             
        
        
        
Step-by-step explanation:

15 - c = 6
15 - 6 = c
9 = c
c = 9
 
        
             
        
        
        
Answer:
a = 1.5
b = 1.75
Step-by-step explanation:
First, we need to solve  and replace the result in the initial equation as:
 and replace the result in the initial equation as:
 
Then, this equality apply only if the coefficient of  is equal in both sides and the constant is equal in both sides.
 is equal in both sides and the constant is equal in both sides.
It means that we have two equations:

So, using the first equation and solving for a, we get:

Finally, replacing the value of a in the second equation and solving for b, we get:
