You will need to work left to right.
p - 10p + -5p +14p - -9p - 2 = -20
-9p + -5p +14p - -9p - 2 = -20
-14p +14p - -9p - 2 = -20
0p- -9p - 2 = -20
9p - 2 = -20
Then you will want to eliminate 2 by adding it to both sides
9p = -18
Then divide by 9 to isolate P
p=-2
 
        
             
        
        
        
Answer:
Rows 126
last row has 41
last row is not full because its an odd number
Step-by-step explanation:
 
        
             
        
        
        
Answer:
at the begining
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
let : x the length and y the width    .... ( x  > y and x ; y reals numbers )
the perimeter is : 2(x+y)
2(x+y) = 55...(1)
x/y = 7/4 ...(2)
by (2) : x = (7/4)y
subsct in (1) : 2( (7/4)y +y ) =55
(7/2)y +2y =55 
multiply by 2
7y +4y = 110 
11y = 110
y = 10
x = (7/4)(10)
x = 35/2