4 ms·I wonder if Obama + 2017 == Obama - Presidentby fauigerzigerk 11y agoI wonder if Obama + 2017 == Obama - Presidentkmicklas 11y agoThat would be equivalent to 2017 == -President, which is unlikely.jmalicki 11y agoIf you want an equivalent you'd have to think in similar units. Like Obama + 2017 = 1981 + Carter or Obama + 2017 = Bush + 2009