Jessibell9
Jessibell9
24-08-2014
Mathematics
Answered
Solve the inequality. -z+20>z+20
Answer :
Аноним
Аноним
24-08-2014
[tex]-z+20 > z+20\ \ \ \ \ \ |subtract\ 20\ from\ both\ sides\\\\-z > z\ \ \ \ \ |add\ z\ to\ both\ sides\\\\0 > 2z\\\\2z < 0\ \ \ \ \ \ \ |divide\ both\ sides\ by\ 2\\\\z < 0\\\\z\in(-\infty;\ 0)[/tex]
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konrad509
konrad509
24-08-2014
[tex]-z+20>z+20\\ -2z>0\\ z<0[/tex]
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