Question

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

Answer 1

=-q-p

Answer 2

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

Answer 3

-(p-q)=-p+q
-(q-p)=-q+p

so we have
p-p+q-q-q+p

p-p+p+q-q-q
0+p+0-q
p-q

Answer 4

why did they have to put p and q's together?
it makes me blind alittle

Answer 5

mind your p's and q's

Answer 6

haha ! :P i gt the answers frm othrs

Answer 7

my eyes hurt!! try as and b's next time plz!