Question

The sum of the numerator and denominator of a fraction is 12 if the denominator is increased by 3 the fraction becomes 1/2 find the fraction​

Answer 1

Step-by-step explanation:

n+d =12

d=12-n

n/d+3=1/2

n/12-n+3=1/2

2n=15-n

3n=15

n=5

5+d=12

d=7

Answer 2

Answer:

5/7

Step-by-step explanation:

Let the fraction be x/y

X+y=12--------(1)

X/y+3=1/2

Y+3=2x

2x-y=3--------(2)

2x-y=3

X+y=12

3x=15

X=5

5+y=12

Y=7

X/y=5/7