Using multiple elements with variables

Using multiple elements with variables

Hi,

I know that I can apply multiple elements like this:

$('.element-1', '.element-2').show();

But if I put those elements in variables like this:

var $elem-1 = $('.element-1'),
    $elem-2 = $('.element-2');


How should I change this:
$('.element-1', '.element-2').show();

to use with those variables?

Thanks