Ответ:
a)
{3x-9<0
5x+2=>0
{x<3
x=>-2/5
x=[-2/5;3)
б)
{15-x<14
4-2x<5
{x>1
x>-1/2
x=(1;+бесконечность)
x>1
в)
{9x+2>3+x
3x-4<=x
{x>1/8
x<=2
x=(1/8;2]
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Answers & Comments
Ответ:
a)
{3x-9<0
5x+2=>0
{x<3
x=>-2/5
x=[-2/5;3)
б)
{15-x<14
4-2x<5
{x>1
x>-1/2
x=(1;+бесконечность)
x>1
в)
{9x+2>3+x
3x-4<=x
{x>1/8
x<=2
x=(1/8;2]