Question

Solve each of the following systems of equations by the method of cross-multiplication :

$\frac{x+y}{xy}=2,\frac{x-y}{xy}=6$

Answer 1

GIVEN:

To find: The solution of the systems of equation by the method of cross-multiplication:

Here we have the pair of simultaneous equation

Let

By cross multiplication method we get

So

We know that

Hence we get the value of and