[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 580: sizeof(): Parameter must be an array or an object that implements Countable
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 636: sizeof(): Parameter must be an array or an object that implements Countable
•10130160040
Page 1 of 1

10130160040

Posted: Wed Dec 20, 2017 12:19 pm
by ada
$\frac12\div\left(2\frac12\div\frac{9}{7}\right)$