Converting to STEP

I received a SolidWorks part that was done in a future version. I have 2018 version. Is there anyway to save the part as a STEP so I can open it in 2018? I'm not sure what version they have. This is a classwork and I'm to order from a company to email me their parts to assemble together with some parts that I created.
The only other way that I can think of that might work is Pack and Go but I don't have that option with student version.