It sure looks really bizzare, but here it is broken down... "0 degrees celsius in kelvin" -> 0 degrees Celsius = 273.15 kelvin "273.15 kelvin + 2

It sure looks really bizzare, but here it is broken down... "0 degrees celsius in kelvin" -> 0 degrees Celsius = 273.15 kelvin "273.15 kelvin + 273.15 kelvin in degrees Celsius" -> (273.15 kelvin) + (273.15 kelvin) = 273.15 degrees Celsius Hence: "0 degrees celsius + 0 degrees celsius" -> (0 degrees Celsius) + (0 degrees Celsius) = 273.15 degrees Celsius