Question

Simplify m-{n-[p+(m+n-p)]}

A. 0

B. 2m

C. -2m+2p

Answer 1

m - { n - [ p + ( m + n - p ) ] } 

= m - { n - [ p + m + n - p ] }  

= m - { n - p - m - n + p  }  

= m - { -m }  

= m + m

= 2m

Answer: (B) 2m