16-4+2, numeric expression, algebraic expression, a-5x+4, numeric expression, algebraic expression, Twice a number less than 10, 10 - 2a, 2a - 10, -|-6|, 6, -6, The additive inverse of|-2|, -2, 2

排行榜

视觉风格

选项

切换模板

恢复自动保存:?