Respuesta :
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:
]-∞ , 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