Erase question

Whats the easiest/quickest way to delete the line (part of a larger rectangle) that my small rectangle runs through. I.e. so I can just have the smaller rectangle without the line running through the middle of it?

I found the ERASE function, but it doesn't seem to osnap, so not precise enough.

NOTE: The line I want to delete is circled in RED above.

Use the TRIM command,

select the 2 lines i've circled,

press return, then select

the line you've circled

perfect

thanks so much!