Elimination method :

The system of equations are $\"\"$ .

To get two equations that contain opposite terms multiply the first equation by $\"\"$ .

Write the equations in column form and add the equations to eliminate M - variable.

$\"\"$

The resultant equation is $\"\"$ .

Substitute the value of $\"\"$ in either of the original equations and solve for N.

The first equation: $\"\"$ .

$\"\"$

$\"\"$ .

The solution is $\"\"$ .