Question

[Nguyễn Xuân Phương Uyên]

Giúp tui với !

a, 4: 9/5 : 10/3

b, 1/2 x 3/4 : 6/5

Answer 1

[Sahara]

a,\(4:\dfrac{9}{5}:\dfrac{10}{3}\)
\(=\dfrac{4\times5\times3}{9\times10}\)
\(=\dfrac{2\times2\times5\times3}{3\times3\times5\times2}=\dfrac{2}{3}\)
b,\(\dfrac{1}{2}\times\dfrac{3}{4}:\dfrac{6}{5}\)
\(=\dfrac{3\times5}{2\times4\times6}\)
\(=\dfrac{3\times5}{2\times4\times3\times2}=\dfrac{5}{16}\)

Answer 2

[Nguyễn Thị Minh Tâm]

a) $4\; :\frac{9}{\mathrm{/5}}:\frac{\mathrm{10/}}{3}$

$=4\times \frac{\mathrm{5/}}{9}:\frac{10}{\mathrm{/3}}$

$=\frac{4}{\mathrm{/1}}\times \frac{5}{\mathrm{/9}}:\frac{10}{\mathrm{/3}}$

$=\frac{20}{\mathrm{/9}}\times \frac{3}{\mathrm{/10}}$

$=\frac{60}{\mathrm{/90}}$

$=\frac{60:30}{}$$\frac{90:30}{}$

$=\frac{2}{\mathrm{/3}}$