Simplify:
(i) 
(ii) 
(iii) 
(iv) 
(v) 
(vi)
(vii) 
(viii)
(i) 
– 
= 
+ 
= 
+ 
= 
= 
(ii) 
+ 
= 
+ 
= 
+ 3
= 
= 
(iii) 
+ 
= 
+ 
= 
+ 
= 
= 
(iv) 
+ 
= 
+ 
= 
= 
= 
(v) 
+ 
= 
+ 
= 
+ 
= 
(vi) 
+ 
= 
+ 
= 
= 
(vii) 
+ 
= 
+ 
= 
+ 
= 
= 
= 
(viii) 
– 
= 
- 
= 
= 
= 
4