7x 3 9x 8 July 8, 2019 16 32 64 128 7x 3 9x 8 4x 6 7x 3 2 9x 8 4 6 7x 3 2 9x 8 4 4 7x 6 )= 3 9x 8 3 7x 8 9x 7 8 Solve $3 9x = 3 7x 8 $ 9x 3 )-( 7x 7 )=- 84