Question

fram the equation for the denominator of a rational number is 2 less than its numerator if the numerator is decreased by 5 and the denominator is increased by 1 the rational no is 2/3

pls answer ​

Answer 1

Answer:

Let the numerator of the rational number be x.

So as per the given condition, the denominator will be x + 8.

The rational number will be \(\frac{x}{x+8}\)

According to the given condition,

\(\frac{x+17}{x+8-1} = \frac{3}{2}\)

 

\(\frac{x+17}{x+7} = \frac{3}{2}\)

 

3(x + 7) = 2(x + 17)

3x + 21 = 2x + 34

3x – 2x + 21 – 34 = 0

x – 13 = 0

x = 13

The rational number will be

= \(\frac{x}{x+8}\)

= \(\frac{13}{13+8}\)

Rational number = 13/21

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