You can use it to find the area of something
 
        
                    
             
        
        
        
It’s 8 u cross multiply 7 and 1 then 1 and 56 and then divide 56 by 7
        
             
        
        
        
Step-by-step explanation:
Like Terms: Terms that have identical variable parts (same variable(s) and same exponent(s)). When simplifying using addition and subtraction, you combine “like terms” by keeping the "like term" and adding or subtracting the numerical coefficients.
 
        
                    
             
        
        
        
Let the dimensions be x and y
Given that the area is 40m²
xy = 40 ----------------- (1)
Given that the perimeter is 26
2(x + y) = 26
x + y = 13
x = 13 - y ---------------- Sub into (1)
(13 - y)y = 40
13y - y² = 40
y² - 13y + 40 = 0
(y - 8)(y - 5) = =
y = 8 or y = 5
The dimensions are 8 meters and 5 meters 
        
             
        
        
        
I want more points next time....Hehehee!
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<em>Solution in attachments!</em>