LaTeX.org

Thanks, that worked great! I am using the "leqno" option for the article class, and the first code (not dependent on amsmath) put the equation number back on the right. The amsmath version kept it on the left, however. Mathtools looks useful as well...

Is this possible? I've done a fair bit of searching and can't seem to figure out how to do this. Parentheses are the default, but I need brackets for a journal submission. Can anyone help?