Answer:
100 2/3
Step-by-step explanation:
50+50=100
1/3+1/3=2/3
100+2/3= 100 2/3
 
        
                    
             
        
        
        
Answer:
6 hours
Step-by-step explanation:
because if they work together it will be 9 hours slower than Kelsey's time alone. 
not sure if correct 
 
        
                    
             
        
        
        
Anything without a variable in front.
In other words, the constants are -3.7 and 1/3 
        
                    
             
        
        
        
Answer:
1. x = 12
2. x = 5
Step-by-step explanation:
1. -222 = -2x - 12x - 54 
-222 = -14x - 54 
-168 = -14x 
x = 12
2. 154 = 2x + 12x + 84
154 = 14x + 84
70 = 14x 
x = 5