4x 10 2 4 x July 8, 2019 16 32 64 128 3x 10 4x =- 2 x 4 )+ 9 4 (- 6x 7 )= 4x 10 2 1 x 4x 2 18x 10 x 2 x 4 5 4x 2 )- 4 x 1 )= 10 9 4x 4 x 2 10 10 4x 4 16 2 x 2 2 4x 8 )=- 4 10 x 4 x 4 x 4 x 4x-10 2