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Harry Potter theme song played by a pencil + math equation

2018-01-12 2,141 1,159 215,417 YouTube

x=-6/15. See Pitch Perfect Cup Song played by a pencil: https://www.youtube.com/watch?v=18ch5oCK0hM See Havana by Camila Cabello played by a pencil: https://www.youtube.com/watch?v=UaPuNRDuaMg -14x - 17 = -14 + x + 4 -1 -14x - x = -14 + 4 - 1 + 17 -15x = 6 x = -6/15