Question

2x = by or 2x - 5y =o
(If x= cost of a pen and y= cost
of a pencil)​

Answer 1

Hey friend here is your answer

Let the cost of one notebook be 'x' and cost of one pen be 'y'

A.T.Q

I think you should do by this

x = 2y

or,x- 2y = 0

So here you got your answer...

hope you like it.

plz give thanks