Answer:

Step-by-step explanation:
Solve for  x  by simplifying both sides of the equation, then isolating the variable.
 
        
             
        
        
        
Answer:
10 miles per hour
Step-by-step explanation:
speed= distance/time
30/3
=10
 
        
             
        
        
        
Let B = age on Ben
and age of Ishaan =I
 B =4I
B = 6+I
Gives 6+I = 4I
 6 = 3I
I =2 years and B = 4x2 = 8years
Age of Ishaan = 2 years
        
             
        
        
        
Answer:
Restating the question clearly:
Ben drinks tea at an incredible rate. He drinks 3 1/2 liters of tea every 2/3 of an hour. How much does he drink in one hour?
Answer:
He drinks   in 1 hour
  in 1 hour
Step-by-step explanation:


 
        
             
        
        
        
Answer:
d+9
Step-by-step explanation:
sum implies addition
so you would add d and 9
since d is a variable the most you can simplify is
d+9