Question

the sum of the numerator and the denominator of a given fraction is 12 if 3 is added to its denominator then the fraction becomes 1 by 2 find the given fraction​

Answer 1

Step-by-step explanation:

Let us take the fraction as x/y

X+y=12

X/y+3=1/2*x/y

X/y + 3 = x/2y

3= x/y- x/2y

X/y=3

3y=x

3y + y= 12

Y=3

X=9

Answer 2

Step-by-step explanation:

Let the numerator be x and denominator be y, then

x+y= 12

x=12-y

Now,

x/ y=1/2

= 2x= y+3

putting the value of x we get

2(12-y) =y+3

24-2y=y+3

-3y=-21

y=7

putting y=9, we get

x+7=12

x=5

required fraction is 5/7

hope it helps you...

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