Whats the definition if present value

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Joanie watched 1 out of three of a movie in the morning

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?