Question

Q3. The sum of the numerator and denominatorof a funtion is equal to 7 four the numerator les than
5 times the denominator by 8. Find the funtion​

Answer 1

Step-by-step explanation:

Let fraction be x/y

given x+y = 7........eqn 1

        4x=5y-8

        that is 5y-4x=8..........eqn 2

to equate coef of y multiply eqn 1 by 5

           so 5(x + y = 7)

              =5x+5y=35.............eqn 3

sub eqn 2 from eqn 3

 =9x =27

x=3

 substituting value of x in eqn 1

x + y =7

 3+y=7 

y=4

so the fraction is 3/4