7 9x 4 ) 5x July 8, 2019 16 32 64 128 7 9x 4 )+ 5x X2 9x 7 5x 4 9x 4 5x 12 7 8 2 7 5x )= 9x 4 9x x 7 5x 4 8 3x 7 x 1 )+ 5x 9x 4 2 9x 4 7 6 5x 3 18 5 x 7 = 35 9 5-x=-4 7