Question

sum of numerator and denomenator of given fraction is 12.if 3 is added to its denomenator ,then the fraction becomes 1÷2.find the given fraction​

Answer 1

Answer:

x=5 y=7

Step-by-step explanation:

let the num be=x

let the denomenator be=y

then atq

x+y=12.......(i)

and

x/(y+3)=1/2

2x=y+3

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

from (i) and(ii)

by elimination meathod

2x-y=3

x+y=12

______

3x=15

x=5 and

5+y=12 then y=7

therefore x=5 and y=7