Question

20. The numerator of a rational number is 3 less than the denominator. If the denominator is increased by 5 and the numerator by 2, we get the rational number 1/2 Find the rational number.

Answer 1

Step-by-step explanation:

let the denominator be x

so numerator will be x-3

so rational no.is x-3/x

now if . If the denominator is increased by 5 and the numerator by 2, we get the rational number 1/2

so rational number is x-1/x+5 = 1/2

2(x-1) = x+5

2x-2 = x+5

x= 7

so original rational number was 4/7