X-15Y+(60)(6.5)-(1.5X+6Y-37.5/5+30)*9=0
如何整理得1.7X+25.8Y=187.5
麻煩給我運算過程 感謝!
方程式運算
2014-06-21 11:55 pm
回答 (2)
2014-06-22 2:26 am
✔ 最佳答案
0=x-15y+390-9*1.5x-54y+9*7.5-270=(-13.5+1)x-69y+120+67.5=-12.5x-69y+187.512.5x+69y=187.5......ans板主答案可能有誤!!
2014-06-22 3:42 am
X-15Y+(60)(6.5)-(1.5X+6Y-37.5/5+30)*9=0
X-15Y+390-13.5X+54Y-67.5+270=0
-12.5X+39Y=-592.5
12.5X-39Y=592.5
X-15Y+390-13.5X+54Y-67.5+270=0
-12.5X+39Y=-592.5
12.5X-39Y=592.5
收錄日期: 2021-04-30 18:51:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140621000015KK06991