muellersam24sam12345 muellersam24sam12345
  • 26-04-2017
  • Mathematics
contestada

what is the answer 20*x-18<50<36*x-16

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Kmieteczka
Kmieteczka Kmieteczka
  • 26-04-2017
20x-18<50<36x-16

1°
20x-18<50
20x<68  |:20
[tex]x<3\frac{2}{5}[/tex]

2°
50<36x-16
-36x<-16-50
-36x<-66 |:(-36)
[tex]x>1\frac{5}{11}[/tex]

The answer:
[tex]xe(1\frac{5}{11};3\frac{2}{5})[/tex]
[tex]1\frac{5}{11}<x<3\frac{2}{5}[/tex]

:)
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