Ummmmmmm yeah..what is this
        
                    
             
        
        
        
Hope this helps!
28 - 13 = 15
15 x 12 = 180 Fifth graders
        
             
        
        
        
16 = 48/3
48 divided by 2 = 24
There is 24 students in the club.
        
             
        
        
        
<span>x + y = 0 hope this helps </span>
        
             
        
        
        
Answer:
x=12
Step-by-step explanation:
For the given situation , a quantity x is added to  gives 15.
 gives 15.
We can set up equation as 

Multiply each term by 4 on both sides to get rid the denominator.
It gives,
4 x+x=60
Now, combine like terms
5 x=60
Divide both sides by 5
x=12.