2x - 12 > 2 + x?
回答 (8)
2008-06-27 4:04 pm
✔ 最佳答案
2x - 12 > 2 + xadd 12 to both sides
2x -12 +12 > 2 +12 +x
2x > 14 + x
subtract x from both sides
2x-x > 14+x-x
x > 14
2008-06-27 11:34 pm
x>14
2008-06-27 11:10 pm
Inequalities follow similar rules as equalities. Add 12 and subtract x from each side to get the answer.
2008-06-27 11:09 pm
Add 12 to both sides
2x - 12 + 12 = 2x
2 + 12 + x = 14 + x
2x > 14 + x
Subtract x from both sides
2x - x > 14 + x - x
x > 14
2x - 12 + 12 = 2x
2 + 12 + x = 14 + x
2x > 14 + x
Subtract x from both sides
2x - x > 14 + x - x
x > 14
參考: Longtime college math teacher
2008-06-27 11:06 pm
2x - 12 > 2 + x
2x - x > 2 + 12
x > 14
2x - x > 2 + 12
x > 14
2008-06-27 11:03 pm
2x - 12 > 2 + x
=
2x-x>2+12
=
x>14
=
2x-x>2+12
=
x>14
2008-06-27 11:01 pm
2x - 12 > 2 + x
x > 14
x > 14
2008-06-27 11:01 pm
x>14
收錄日期: 2021-05-01 10:44:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080627075709AAU0U89