5X + 4 (X / 2) - 2 / 3 (x + 8) = 9
2007-02-23 11:24:11 · 1 個解答 · 發問者 J 7 in 科學 ➔ 數學
大個X同細o既x有無分別？
如果無︰
3* (5X + 4 (X / 2) - 2 / 3 (x + 8)) = 3*9
15X + 6X -2X -16 = 27
19X = 43
X = 2 又 5/19 OR 2.263
2007-02-23 11:32:48 · answer #1 · answered by ? 3 · 0⤊ 0⤋