-2/3x+30>80?
回答 (2)
2016-07-13 2:59 am
-(2/3)x + 30 > 80
-(2/3)x + 30 - 30 > 80 - 30
-(2/3)x > 50
-(2/3)x * (-3/2) < 50 * (-3/2)
x < -75
-(2/3)x + 30 - 30 > 80 - 30
-(2/3)x > 50
-(2/3)x * (-3/2) < 50 * (-3/2)
x < -75
2016-07-13 3:17 am
-2/3x + 30 > 80
30 - 2x/3 > 80
90 - 2x > 240
-2x > 150
x < -75
30 - 2x/3 > 80
90 - 2x > 240
-2x > 150
x < -75
收錄日期: 2021-04-18 15:15:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160712185358AAKYKqH