A natural number is 8/3 more than its reciprocal. Find the number (8/3 is in mixed fraction)
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The natural number is 3 or, - .
Step-by-step explanation:
Let the natural number = x
To find, the number = ?
According to question,
x - =
⇒ =
By crossmultiplication, we get
3 - 3 = 8x
⇒ 3 - 8x - 3 = 0
⇒ 3 - 9x + x - 3 = 0
⇒ 3x(x - 3) + 1(x - 3) = 0
⇒ (3x + 1)(x - 3) = 0
⇒ x - 3 = 0 or, 3x + 1 = 0
⇒ x - 3 = 0 ⇒ x = 3
or, 3x + 1 = 0 ⇒ x = -
∴ x = 3 or, -
Thus, the natural number is 3 or, - .
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