✔ 最佳答案
1.
5x-4(小於或等於)26
5x(小於或等於)26+4
5x(小於或等於)30
x(小於或等於)30/5
x(小於或等於)6
2.
4<5+x
4-5<x
-1<x
x>-1//
3. (is 2份之3x)??????
3x份之2<(小於或等於)-9 .... 3x份之2=2/3x
2/3x(小於或等於)-9
2(小於或等於)-9(3x)
2(小於或等於)-27x
-27x(大於或等於)2
x(大於或等於)-2/27
or
2份之3x(小於或等於)-9
3x/2(小於或等於)-9
3x(小於或等於)-18
x(小於或等於)-6
4.
7x+18<(小於或等於)-3
7x(小於或等於)-3-18
7x(小於或等於)-21
x(小於或等於)-3
5.
-5-6x<19
-6x<19+5
-6x<24
6x>-24
x>-4
6.
x+30<3-2x
x+2x<3-30
3x<-27
x<-9
7.
4(x+3)>(大於或等於)12
x+3(大於或等於)12/4
x+3(大於或等於)3
x(大於或等於)3-3
x(大於或等於)0
8.
-2(x-7)<4
x-7>4/-2
x-7>-2
x>-2+7
x>5
i am sorry that i cant put the answer in 數綫 you can learn at
http://www.junyiacademy.org/math/algebra/solving-linear-inequalities/v/inequalities-on-a-number-line
(you can ask me if you have any problem)
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2015-03-11 20:51:02 補充:
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