7 8 x 3 4x July 8, 2019 16 32 64 128 3 4x 9 )+ 5 7 8 x X 3 4x 8 find x 7 64x 2 Express 7 8 x 3 4x 7 x 3 )- 5 4x 8 7 x 3 )- 6y 4x 8 2 x 8 3 )= 7 1 4x X 3 7 8 x 1 6 4x 6 7 x 3 )- 5 ≤ 4x 8 7 2 x 3 6 9 4x 8 7 x 8 3/4 7/8 x 4