Evaluate : 19pqr + 3p -4q -7pqr + 5qpr
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Answer:
17 pqr + 3p - 4q
Step-by-step explanation:
19pqr + 3p - 4q - 7pqr+5qpr
19pqr - 7 pqr +5 pqr + 3p - 4q
17 pqr + 3p - 4q
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