4 2 3x ) 7 6x 1 )- 9 9x 4 July 8, 2019 16 32 64 128 4 2 3x )+ 7 6x 1 )- 9 9x 4 )= 30 4 2 3x )+ 7 6x 1 )- 9 9x 4 1) 9x - 7 = 6x + 14 2) 3(4 - 2x) + 6 = - 2x + 4
