2016汽車駕照的筆試 汽車筆試沒過汽車駕照筆試有效期限汽車筆試時效2015汽車駕照筆試是採用什麼方法考的?2016

絕對值就想成 | | 裡面不管放什麼都只看數字的部分
例如： |22| = 22 、 |-22| = 22 不管裡面是正還是負，只看數字就對了

也就是說加了絕對值之後結果一定是正數，
也就是我們小時就會的那些大於零的正數，
所以現在小時候的觀念去想 l甲數l+l乙數l=0
小時候知道的那些正數哪兩個相加等於零?
第一時間想到的就是兩個零相加才會等於零嘛
所以 l甲數l = 0、l乙數l = 0
就可以知道甲數、乙數都等於0了

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