3x-4y=-5
-x+2y=3
Multiply the second by one:
3x-4y=-5
-2x+4y=6
Combine the equations:
x = 1
Substitute x and solve for y:
-2*1+4y=6
-2+4y=6
4y=8
y=2
Answer:
(1,2)
        
             
        
        
        
You use the factor tree.
               10
             5    2      then you have 2 prime numbers and you have to multiply them together
        
             
        
        
        
The answer is 3 , hope this helps
        
                    
             
        
        
        
Answer:
19 11/16 or 315/16
Steps: 
Turn the fractions into an improper fraction and then multiply straight across 
5 1/4 = 21/4 
3 3/4 = 15/4 
(21/4)*(15/4)= 315/16= 19 11/16 
Yes you got it right :)