Question

if 7x-5y = 4 x + y find the value of x:y and Hence use componendo and dividendo to find the value of 9x + 5/9x-5y

Answer 1

Answer:

So the value of , (x:y) = 2:1

And value of,(9x+5y)/(9x-5y) = (18/5)

Step-by-step explanation:

7x-5y = 4 x + y

So, 3x = 6y

So, (x/y) = (x:y) = 2

And (9x+5y)/(9x-5y) = (9x+5y+9x-5y)/(9x+5y-(9x-5y)) = (18x/10y) = (9/5)(x/y) = (9/5)(2) = (18/5)