12 5x ∙ 10x July 8, 2019 16 32 64 128 12 10x =- 5x 5 10x 12 5x 8 12 5x 2x 2 15 10x 12 10x 5x =- 18 12 10x 5x 5x 12 10x 37 9x 1 360 5x 12 10x 37 9x 1 5x 12 6x =- 10x 7 1 12 x 5