645/8= 80.625 lol why do u even need this
        
                    
             
        
        
        
The answer is approximately 11.18.
        
             
        
        
        
Answer:
18
Step-by-step explanation:
Find the factors of each denominator
2 = 1*2
6 = 2*3
9 = 3*3
The least common multiple is 
2*3*3 = 18
The least common denominator is 18
 
        
                    
             
        
        
        
Step-by-step explanation:
hope this helps you
.................. 
 
        
             
        
        
        
2.8
-14x+28=-4x
10x=28
X=2.8
Mark brainliest please