9 4 5x ) 2 7 6x 7 July 8, 2019 16 32 64 128 9 4 5x )+ 2 7 6x 7 5 x 7 = 35 4(7 - 5x) 6(4x + 9) 4) 9 5x + 2 =5 7x-5 6 4x + 9 = 5(2x - 7) - 6x