Answer:
To know how a ciminal operates
It really depends on the movie. For instance, in Apollo 13, scenes were shoot aboard a Boeing KC-135 or the Vomit Comet. It is a NASA's refueling tanker plane for Zero G training. Astronauts wanna-be would fly up in the plane and experience a free fall.
Sure! First, you find a common denominator for all of the fractions. If you don't know how, search online. When they have the same denominator and they are equivalent fractions, subtract the numerator and keep the denominator. That is your answer!
If we are speaking about latin, educe is a fine choice.