[lojban] Is .e == .ije?

["Avital Oliver" <olivera@macs.biu.ac.il>]

Is <SUMTI1 e SUMTI2 cu SELBRI> always equivelant to <SUMTI1 cu SELBRI .ije
SUMTI2 cu SELBRI>?

If so, then is <mi .e do mo> equivelant to <mi mo .ije do mo>?

If so, how would I say, "What did we both do? (not neccisarily as a mass)"?

Good day.