2 x minus 1 upon x is equal to 7 July 8, 2019 16 32 64 128 2 x minus 1 upon x 3 7 x 3 upon x minus 1 is equal to 5 2 x minus 3 upon 5 x 3 upon 4 is equal to 4 x 1 upon 7 6 x 1 upon 2 1 is equal to 7 x minus 3 upon 3 1 upon 2 x 7 x minus 6 is equal to 7 x 1 upon 4 2 x minus 2 x 2 5
