PDF chapter test TRY NOW

Evaluate the following conditions and state true or false
 
i) 29\(+\)(14 \(+\) 29) \(=\) (29 \(+\) 14)\(+\)29
 
ii) 9\(-\)(14\(-\)29) \(=\) (9\(-\)14)\(-\)29 
 
iii) 29 \(+\) (\(-\) 29) \(= 0\)
 
iv) 9 \(+ 0 = 0\)