Question

p-(p-q) -q-(q-p) =?
a) p-q
b) p+q
c) q-p
d) pq

Please answer
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Answer 1

Answer:

a) p - q

Step-by-step explanation:

$p - (p - q) - q - (q - p) \\ = p \cancel{ - p} \cancel{ + q} - q \cancel{ - q } \cancel{ + p} \\ = \large \underline{ \underline{ p - q}}$