Answer:
Numerator of the original fraction is 1
Explanation:
Let's assume numerator of fraction as 'y'
denominator of fraction as 'x'
so, fraction is

The denominator of a fraction is 3 more than its numerator
so,

When 1/2 is added to this fraction, the resulting fraction's denominator is twice the denominator of the original fractions and its numerator is 1 more than its denominator
so,

we can use first equation and plug x

now, we can solve for y
we get




now, we can find x


now, we can find fraction


So,
Numerator is 1