3 - 4x - 8 = 4 , 4 - 6 - 2x = -2, 2 - 12 = 3x + 6, 5 - 10 = 5x - 15, 1 - 14 - 3x = 11,

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?