Zabbix 4.4: Check of pre-requisites

[etecja]

I've used Ubuntu Server 18.04.3 LTS and Zabbix 4.4 with PHP 7.3. I already tried to intall using "sudo apt intall php7.3-bcmath (...)', but I haven't success.
When I used the apt command to install that extensions the terminal return "php-bcmath is already the newest version (2:7.3+69+ubuntu18.04.1+deb.sury.org+2+php7.3)". Someone help me?

$php --version:
PHP 7.3.10-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Oct 8 2019 05:33:38) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.10, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.3.10-1+ubuntu18.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies

$ zabbix_server --version
zabbix_server (Zabbix) 4.4.0
Revision cfac660b25 7 October 2019, compilation time: Oct 7 2019 07:58:57

Copyright (C) 2019 Zabbix SIA
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it according to
the license. There is NO WARRANTY, to the extent permitted by law.

This product includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit (http://www.openssl.org/).

Compiled with OpenSSL 1.1.0g 2 Nov 2017
Running with OpenSSL 1.1.1d 10 Sep 2019

[Atsushi]

It seems that PHP 7.0.33 works with a web server in your environment. It seems that PHP 7.0 and PHP 7.3 are mixed, so please solve that part first.
For example, if you have PHP 7.0 installed as a package, is it possible to uninstall it?