Lightroom & Photoshop - may I delete old versions?

[PhilWebbPhoto]

Hi I use Lightroom and photoshop, which i open from mydock on my mac, but when i open the adobe symbol on the top bar of my mac it looks like the attached picture. My question is can I delete the old version of LR & Photoshop with no adverse effects? TQ

[Just Shoot Me]

Yes certainly.

[joannacnamibia]

I own LR 5 and now use Adobe LR Classic. Can I remove LR5.7.1 from my computer safely to save space? 

[Peru Bob]

Yes, but if you are that full, it's time to get a larger hard drive.