12 10x 5x July 8, 2019 16 32 64 128 12 10x =- 5x 5 12 10x 5x =- 18 10x 12 5x 8 10x 12 2 5x 6 2y 10x 12 5x y 6 10x 12 4 5x 5 12 10x 12 4 5x 2 5x 12 10x 37 9x 1 12 x 5 12 5x ∙ 10x
