munozroger413 munozroger413
  • 01-02-2020
  • Mathematics
contestada

-18x+21>-15 or 20x-13>27

Respuesta :

texaschic101
texaschic101 texaschic101
  • 01-02-2020

Answer:

Step-by-step explanation:

-18x + 21 > -15                      20x - 13 > 27

-18x > - 15 - 21                     20x > 27 + 13

-18x > -36                            20x > 40

x < -36/-18                           x > 40/20

x < 2                                    x > 2

x < 2 OR x > 2

Answer Link
profarouk profarouk
  • 01-02-2020

Answer:

]-∞ , 2[∪]2 ,+∞[

Step-by-step explanation:

-18x+21>-15 or 20x-13>27

⇔ -18x>-15-21 or 20x>27+13

⇔ -18x>-36 or 20x>40

⇔ x<2 or x>2

Answer Link

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