Question

Factorise : 27x + y + 2? - 9xyz
24. The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this
statement.​

Answer 1

Let the cost of a notebook be Rs. x and that of a pen be Rs. y.

Given the cost of a notebook is twice the cost of a pen.

Then x=2y

or, x−2y=0.

This is the required linear equation in two variable.

Step-by-step explanation:

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