Use the elimination method to solve the following system of linear equations.
$2x+y=1$
$3x-y=4$

Use the elimination method to solve the following system of linear equations.

$10x-4y=5$

$5x-4y=1$

Determine if substitution or elimination would be more convenient to use for the system below.

Determine if substitution or elimination would be more convenient to use for the system below.