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प्रश्न
Subtract: 3p + 5 from p – 2q + 7
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उत्तर
p – 2q + 7 – (3p + 5) = p – 2q + 7 + (– 3p – 5)
= p – 2q + 7 – 3p – 5
= p – 3p – 2q + 7 – 5
= (1 – 3)p – 2q + 2
= – 2p – 2q + 2
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