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Question
Simplify: p + p + 2 + p + 3 + p – 4 – p – 5 + p + 10
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Solution
p + p + 2 + 3 – p – 4 – p – 5 + p + 10 = (p + p + p – p – p + p) + (2 + 3 – 4 – 5 + 10)
= (1 + 1 + 1 – 1 – 1 + 1)p + 6
= 2p + 6
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