3 months, i just answered this same question lol.
        
             
        
        
        
Answer:
8 and 2/3 or 8.666666 forever
Step-by-step explanation:
 
        
             
        
        
        
5x + 2y = 6
3x + y = 4....multiply by -2
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5x + 2y = 6
-6x - 2y = -8 (result of multiplying by -2)
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-x = -2
x = 2
5x + 2y = 6
5(2) + 2y = 6
10 + 2y = 6
2y = 6 - 10
2y = -4
y = -4/2
y = -2 <=== here it is
        
                    
             
        
        
        
Step by step: 4 divided by 56 
because the 4 represents how many sides of the shape .
and 56 is the total of the rectangle prism . 
and u won’t multiply because u can’t get a bigger number than the total .
Answer: 14 
Hope this helps !