Why we do the same thing to both sides basic sytems
This original Khan Academy video was translated into isiXhosa by Athabile Matshotyana. The translation project was made possible by ClickMaths: http://www.clickmaths.org
If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.