Well idk what you are solving for but if it is x , the answer is x is greater than 45/2
        
             
        
        
        
Is there a picture? 
multiply base by height and divide by 2.
        
             
        
        
        
Answer:
 Books remaining in  Andrews book collection = 29 books
Explanation:
  Andrews book collection contains 60 books.
  He donates 15% of his books to the national library,
         Number of books to library = 60 x 15/100 = 9
  Sells 1/4 of his books to a book dealer,
         Book sold to book dealer = 60 x 1/4 = 15
  Sells 7 books on amazon.
  Books remaining = 60 - (9 + 15 + 7)
                               = 60 - 31
                               = 29
 Books remaining in  Andrews book collection = 29 books
 
        
             
        
        
        
4 and 2     
You multiply 4 and 2 to get 8. And you add 4 and 2 to get 6.
        
             
        
        
        
X-6=-11
Do the inverse to the other side. So, add 6.
x-6(+6)= -11(+6)
x= -5
I hope this helps!
~kaikers