Question

[Vũ Thành Minh]

bài1 so sánh 

a) x=24/-54;y=-33/55 b)x=-19/23;y=-25/29

ai giúp mik vs 

Answer 1

[Nguyễn Thị Thương Hoài]

a) x = \(\dfrac{24}{-54}\) = \(\dfrac{-4}{9}\) = \(\dfrac{-20}{45}\)

y = \(\dfrac{-33}{55}\) = \(\dfrac{-3}{5}\) = \(\dfrac{-27}{45}\)

Vì \(\dfrac{-20}{45}\) > \(\dfrac{-27}{45}\) ⇒ \(\dfrac{24}{-54}\) > \(\dfrac{-33}{55}\) ⇒ x > y 

b) x = \(\dfrac{-19}{23}\) = \(\dfrac{4}{23}\) - 1

y = \(\dfrac{-25}{29}\) = \(\dfrac{4}{29}\) - 1

Vì \(\dfrac{4}{23}\) > \(\dfrac{4}{29}\) ⇒ \(\dfrac{4}{23}\) - 1 > \(\dfrac{4}{29}\) - 1 ⇒ \(\dfrac{-19}{23}\) > \(\dfrac{-25}{29}\) ⇒ x > y