Question

Simplify : p + (p – q) + q + (q – p)
(a) p
(b) q
(c) p + q
(d) p – q​

Answer 1

Answer:

d) p-q is the answer as plus and minus of p and q will get cancelled and p-q will be remained

Answer 2

$\rm{p + (p - q) + q + (q - p) = p + p - q + q + q - p}$

$\longrightarrow\rm{p + (p - q) + q + (q - p) = p + p - p - q + q + q}$

$\longrightarrow\rm{p + (p - q) + q + (q - p) = p + q}$