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Tomtit [17]
4 years ago
10

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

Mathematics
2 answers:
Keith_Richards [23]4 years ago
8 0

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

bekas [8.4K]4 years ago
7 0

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

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