If you divide 64/16, that equals 4, then you multiply 4*3 and your answer is 12. It looks something like this (for "showing your work" purposes);
64/16=4
4 x 3=12
answer=16 cups of sugar for 64 bags of tea
        
                    
             
        
        
        
First let us find


Now let;s solve the second part
 
 
        
             
        
        
        
There’s no a in the the equation 
        
             
        
        
        
7 is in the ones place value.
9 is in the tens place value.
Hope this helps.
-Benjamin
        
             
        
        
        
Solve for x using factorizing:
x^2 + 10 x - 24 = 0
The left hand side factors into a product with two terms:
(x - 2) (x + 12) = 0
Split into two equations:
x - 2 = 0 or x + 12 = 0
Add 2 to both sides:
x = 2 or x + 12 = 0
Subtract 12 from both sides:
Answer:  x = 2 or x = -12