- 2x + 3y = 6
- 2x + 3y - 6 = 0
Comparing with ax + by + c = 0, we get
a = - 2, b = 3, c = -6
Let the cost of a notebook be Rs x and the cost of a pen be Rs y.
Then, according to the given condition of the question,
x = 2y
⇒ x – 2y = 0
This is the required linear equation in two variables x and y.