數學問題．急～(方程式)
回答 (3)
2012-07-28 2:27 am
✔ 最佳答案
2(x+6)-5(x-2)=132x+12-5x+10=13
2x-5x=13-10-12
-3x=-9
x=3
2012-07-28 1:57 am
2(x+6)-5(x-2)=13
2x+12-5x+10=13
22-3x=13
-3x=13-22
-3x=-9
x=(-9)/(-3)
x=3
2x+12-5x+10=13
22-3x=13
-3x=13-22
-3x=-9
x=(-9)/(-3)
x=3
2012-07-28 1:55 am
2(x+6)-5(x-2)=13
(2x+12)-5x+10=13
2x+12-5x+10=13
-3x=-9
x=3
(2x+12)-5x+10=13
2x+12-5x+10=13
-3x=-9
x=3
收錄日期: 2021-04-13 18:51:52
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120727000051KK00639