simplify combining like terms - p-(p-q)-q-(q-p)

-p-q

where is the answer?

 what is the value of p & q

-p-(p-q)-q-(q-p)

= -p+q-q-q+q-p

= -p-p+q-q-q+q

= 0+0+0

= 0

Is my answer correct?

 no its wrong -

-p-(p-q)-q-(q-p)

= -p-p+q-q-q+p (we open the brackets)

= -p-p+p+q-q-q  (grouping like terms)

= 2p+q

hope you understand!

cheers!

-p-(p-q)-q-(q-p)

= -p-p+q-q-q+p (now we will open the brackets)

= -p-p+p+q-q-q (we shall be now grouping like terms)

= 2p+q (so,here it is)

i hope this answer is correct and you have understood this type of problem

p+q is the ans.

 - p-(p-q)-q-(q-p)
-p-p+q-p-q+p

(Grouping like terms)

-p-p-p+p+q-q

-2p+0 

This is the answer

      I DIDN'T  UNDERSTAND YOUR QUESTION!!   :(