Question

tell
please open pic ​

Answer 1

Answer:

-2 is the answer for your question

Answer 2

Answer:

if P= -5

and Q = -15

then (P+Q)+(P-Q)

(-5+(-15)) + (-5-(-15))

(-5-15)+(-5+15)

(-20)+(+10)

= -10

hope it helps..