Question

The sum of denominator and numerator of a fraction is 3 less than twice the denominator. If each of the
numerator and denominator is denominator is decreased by 1, the fraction becomes 1/2. Find the fraction
​

Answer 1

Answer:

4/7

Step-by-step explanation:

Fraction: a/b

Given:

1) a+b=2b-3 => b=a+3

2) (a-1)/(b-1)=1/2 => 2a-2=b-1 => b=2a-1

a+3=2a-1 => a=4

b=a+3=7

Fraction found: 4/7

Proof:

4+7=14-3

3/6=1/2