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The denominator of a rational number is greater than its numerator by 7. If 3 is subtracted from the numerator and 2 is added to its denominator,the New number becomes 1/5. find the rational number.​

Answer»

Step-by-step explanation:Denominator of the rational number is greater than the numerator by 7If 3 is subtracted from the numerator and 2 is added to the denomiantor, the number becomes 1/5The rational number⇝ Let the numerator of the fraction be x.⇝ By given,     Denominator = Numerator + 7     Denominator = x + 7⇝ Hence the fraction is,     ⇝ By given,     SUBTRACTING 3 from the numerator and adding 2 to the denominator, the fraction becomes 1/5.⇝ Hence,     ⇝ Simplifying,     ⇝ CROSS multiplying,     5(x - 3) = 1 (x + 9)     5x - 15 = x + 9     5x - x = 9 + 15     4X = 24       x = 24/4       x = 6⇝ Hence the numerator of the fraction is 6.⇝ Now ,    Denominator = x + 7    Denominator = 6 + 7 = 13⇝ Hence the denominator of the fraction is 13.⇝ Therefore the fraction is 6/13.     ⇝ Denominator = Numerator + 7     13 = 6 + 7     13 = 13⇝ Subtracting 3 from the numerator and adding 2 to the denominator, the fraction becomes 1/5.         3/15 = 1/5     1/5 = 1/5⇝ Hence VERIFIED.



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