Question

By elimination method find the solution set of the given pair$4x-3y=5$ and $7x-15y=-1$

Answer 1

Let

$4x-3y=5$ ------ (1)

$7x-15y=-1$ ----- (2)

Multiply (1) by $5$

We get,

$20x-15y=25$ ------ (3)

Let , (2) - (3)

We get,

$x=2$ put in (1)

$y=1$