Question

Rút gọn :

a) \(\dfrac{3.5}{8.24}\)

b) \(\dfrac{2.14}{7.8}\)

c) \(\dfrac{3.7.11}{22.9}\)

d) \(\dfrac{8.5-8.2}{16}\)

e) \(\dfrac{11.4-11}{2-13}\)

Answer 1

a) .

b)

c)

d)

e)

.

Answer 2

https://i.imgur.com/3Fn2xLU.gif

Answer 3

https://i.imgur.com/NJEs9KA.gif

Answer 4

https://i.imgur.com/8TlCO0t.gif

Answer 5

https://i.imgur.com/o3ApxqU.gif

Answer 6

https://i.imgur.com/jQGDgQS.gif

Answer 7

c)

\(\dfrac{3.7.11}{22.9}\) = \(\dfrac{3.7.11}{11.2.3.3}\) = \(\dfrac{7}{2.3}\) = \(\dfrac{7}{6}\)

a)

\(\dfrac{3.5}{8.24}\) = \(\dfrac{3.5}{8.3.8}\) = \(\dfrac{5}{8.8}\) = \(\dfrac{5}{64}\)

b)

\(\dfrac{2.14}{7.8}\) = \(\dfrac{2.7.2}{7.4.2}\) = \(\dfrac{2}{4}\) = \(\dfrac{1}{2}\)

d)

\(\dfrac{8.5-8.2}{16}\) = \(\dfrac{8.\left(5-2\right)}{16}\) = \(\dfrac{8.3}{16}\) = \(\dfrac{2.4.3}{2.4.2}\) = \(\dfrac{3}{2}\)

Answer 8

e)

\(\dfrac{11.4-11}{2-13}\) = \(\dfrac{11.\left(4-1\right)}{-11}\) = \(\dfrac{11.3}{-11}\) =\(\dfrac{33}{-11}\) = \(\dfrac{-11.\left(-3\right)}{-11}\) = \(\dfrac{-3}{1}\) = \(-3\)