please answer it step by step
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Answer:
2P+3Q-8R-(-2P-5Q-8R)
2P+3Q-8R+2P+5Q+8R
=4P+8Q(8R-8R=O)
Step-by-step explanation:
4A-3B+8C-(2A-5B-8C)
4A-3B+8C-2A+5B+8C
2A+2B+16C
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