28m - 12 - 4(7m -3), 28 + 56s - 7(4 + 8s), -12c - 42 - -6(2c + 7), 12c + 42 - 6(2c + 7), 20 + 32x - (5 + 8x ) 4, 20 - 32x) - (5 - 8x) 4, 40x + 80 - 10(4x +8), -4x - 80 - -10(4x + 8), 30 + 12x - 2(15 + 6x), -30 + 12x - 2(-15 + 6x), -30 - 12x - -2(15 + 6x), 21 + 6x - 3(7 + 2x), 12x - 48 - 12(x - 4), 12x + 48 - (x + 4)12, 50x + 20 - 10(5x + 2) , 50 + 10x - 10(5 + x) ,

Distributive Property

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?