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प्रश्न
A natural number decreased by 7 is 12. Find the number.
बेरीज
उत्तर
Let the required number = x
Then x - 7 = 12
⇒ x - 7 + 7 = 12 + 7 (Adding 7 to both sides)
x = 19
∴ Required number = 19
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