Add -4pqr + 5qr - 13 and 7qr +15 + 3pqr
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Step-by-step explanation:
-4pqr 5qr 13
- 7qr. + 15. + 3pqr
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-3pqr. 20qr. 16pqr
Answer is 3pqr. 20qr. 16pqr
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