Question

A fraction equal to 7/10 If 2 is added to
Numerator and 3 is added to denominator.
It original numerator 5 then the orginal
fraction is__________​

Answer 1

Answer:

let numerator = x

denominator = y

A.T.O

x+2/y+3=7/10

10(x+2)=7(y+3)

10x+20 = 7y+21

10x-7y = 21-20

10x-7y=1......(i)

put x=5

10(5)-7y=1

50-7y= 1

-7y=1-50

-7y= -49

y= -49/-7

y = 7

original fraction=5/7