I have a Mac computer, iPad and iPhone. How can I send a non iPhone message and have it show up on all three devices?

[iMore Question]

I have a mac computer, Ipad and Iphone..

How can I send and recieve a text a non iphone a message from my computer and Ipad and have it show up on all 3 devices

 

[kch50428]

Re: I have a mac computer, Ipad and Iphone..

https://support.apple.com/en-us/HT201349