Question

Solve the following pair of linear equations $4x+9y=5$, $3x-5y=39$

Answer 1

$4x+9y=5$ ....(1)

$3x-5y=39$ .....(2)

Multiplying equation (1) by 3 and equation (2) by 4, we get,

$12x+27y=15$

$12x-20y=156$

Solving these two equations, we get,

$x=8$ and $y=-3$.