-0.4x < -16 The solution is {x/ }?
回答 (5)
2008-07-27 1:26 am
0.4 x > 16
4 x > 160
x > 40
{x : x > 40 , x Ð R }
4 x > 160
x > 40
{x : x > 40 , x Ð R }
2008-07-27 1:25 am
-0.4x < -16
x > -16/-0.4
x > 160/4
x > 40
x > -16/-0.4
x > 160/4
x > 40
2008-07-27 12:29 am
x>40
dividing both sides by negative number changes the < to >
dividing both sides by negative number changes the < to >
2008-07-27 12:21 am
-0.4x < -16
x > 40
x > 40
收錄日期: 2021-05-01 10:55:43
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