+ + + + 
p+ p+ p+ p+ 
- - - - 
p- p- p- p- 
= = = = 
p= p= p= p= 
+++ +++ == == 
== == -- -- 
p+= p+= P-- P-- 
a+f= a+f= a+f= a+f= 
A-p- A-p- A-p- A -p- 
1-1= 1-1= 1-1= 1- 1= 
85+2 85+2 85+2 85+2 
a-b= a-b= a-b= a-b= 
2x+5 2x+5 2x+5 2x+5 
y-9x y-9x y-9x y -9x 
+100 +100 +100 +100 
-529 -529 -529 - 529 
5a=? 5a=? 5a=? 5a=? 
y+b+ y+b+ y+b+ y+b+ 
m=v= m=v= m=v= m=v= 
z-q- z-q- z-q- z-q- 
