Hi there,
Yes, you should be able to as long as they are on the same blockchain.
To send your BTC out you will have to simply send and enter the bitcoin address you want to send BTC to.
You can find your Bitcoin Core (BTC) or Bitcoin Cash (BCH) address for receiving payments in the Receive section of the Bitcoin.com wallet. It will be the long string of numbers and letters directly below the QR code for that address.
All Bitcoin Core (BTC) addresses will start with the number '1' or "3" and Bitcoin Cash (BCH) addresses will either start with the number "1" for the old legacy format, the letter "q" for the new BCH address format or "C for the Bitpay address format.
You can swap between the new address format, legacy format and the Bitpay format by tapping/clicking on the option across from 'Address Type'.
You can switch between your BTC and BCH addresses at the bottom of the page by tapping/clicking on the wallet name and selecting the wallet you wish to use 'Bitcoin Core' for BTC, or 'Bitcoin Cash' for BCH.
**If you do not see the BCH address starting with the letter "q" please update your wallet to the latest version.**
Please note that this address will change every time you receive a payment, however all previously used addresses can continue to receive payments into your wallet.
Please read Getting Started Section to learn more about Bitcoin, how it works and how to use it. :
https://www.bitcoin.com/getting-started/
You may also find:
FAQ section:
https://www.bitcoin.com/faq
Wallet FAQ:
https://walletsupport.bitcoin.com/
Regards,
Kuan