how to show post with 2 specific categories

hei i have a problem, i need to show post with 2 category, exmple i have master category is education and i need to filter that , and show post have category education and forex

my code for show post forex

$category_id = get_cat_ID('Forex');
                        $args = array(
                            'numberposts' =>8,
                            'offset' => 0,

                            'order' => 'DESC',

                           'cat'=>$category_id,
                            'post_type' => 'post',
                            'post_status' => 'publish');

my code for show post education

$args = array(
                            'numberposts' =>28,
                            'offset' => 0,

                            'order' => 'DESC',

                           'cat'=>1533,
                            'post_type' => 'post',
                            'post_status' => 'publish');