Como Subtrair Somando

Um enorme obrigado aos seguintes assinantes do Subbable por tornarem o MinutePhysics possível:

bashessels.nl
RJ Dye
Vanja Pejovic
Zoltan Peczoli
Garth Gergerich (@twarth)
Veggie do Reddit
DeathByPuppets
Alysa Joaquin
Kasey Kagawa
Candice Blodgett
John B Kelly III
Jeremy Tuohy
Moti Lieberman
Róisín Hébert
Sadhbh Hébert
Mark Delcambre (@charkbot)
Lije Carpenter
AdamTheMechE
Principia
Joseph Perry
nowwearealltom
Isabella Clara Archuleta Boyce
David Howard
Nico Houbraken
Gustav Delius

Mark
Wes Brown
John Green
Florian Philipp
Rens van der Heijden
Bob Bolch
Daniel Ametsreiter
Joël Quenneville
Richard Pearson
David Dailey
Steven Mulder
Karim
Ethi Raj
Ryan Kyle
William Ricketts
Collin Mandris
Matt
Jonathan Foster
Siddharth Sadanand
Maarten Daalder
Robby Olivam
Alan Browning
Jonathan Piersa
Julia Person
James Craver
Sarah Chavis
Yonatan Bisk
Richard Campbell
Chris Barrett
Jan A
Christopher Coleman
Daniel « YoureDown » Breger
Hendrik Payer
Daniel Yip
Matt K
William Pearson
Kevin Lynch
Nick Ward
Kevin
john eriksson
Allan Farrell
Tobias Olesen
Chris Chapin
Michael Keefe
Jon Mann
Bert Goethals
Joji Wata
Adam Naber
Rob Ibsen
Jacob Gumpert
Peter Collier
Andi Davis
Aarthy
Raymond Cason
Evan Gale
Paul
Tori McClanahan
Andrew Stobie
Dominik Steenken
Danilo Metzger
Christian Altenhofen
Ezra Lee
Roy Morgan
Olivia Darroch
Amber Ciarvella
ryan horlacher
Keith Chang
Milokot
Janel Christensen
Will Scherer
Mike Fulcher
Larom Lancaster
Liam Callaway
John Harman
Christos Papandreou
Fernando Pazin
Johnathon Kinville
J…