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\(\dfrac{11}{2}\): \(\dfrac{1}{4}\) \(\times\) \(\dfrac{5}{3}\)
= \(\dfrac{11}{2}\) \(\times\) \(\dfrac{4}{1}\) \(\times\) \(\dfrac{5}{3}\)
= 22 \(\times\) \(\dfrac{5}{3}\)
= \(\dfrac{110}{3}\)
\(\dfrac{5}{2}-\dfrac{1}{4}+\dfrac{5}{3}\)
= \(\dfrac{30}{12}-\dfrac{3}{12}+\dfrac{20}{12}\)
= \(\dfrac{7}{12}\)
\(\dfrac{14}{5}\times\dfrac{2}{3}\)+ 5
= \(\dfrac{28}{15}\) + 5
= \(\dfrac{28}{15}\) + \(\dfrac{75}{15}\)
= \(\dfrac{103}{15}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(=\dfrac{8}{5}+\dfrac{18+2-14-6}{11}+\dfrac{8}{5}=\dfrac{16}{5}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
5/2 - 1/4 + 5/3
= 10/4 - 1/4 + 5/3
= 9/4 + 5/3
= 27/12 + 20/12
= 47/12
11/2 : 1/4 x 5/3
= 11/2 x 4/1 x 5/3
= 44/2 x 5/3
= 220/6
= 110/3
14/5 x 2/3 + 5
= 28/15 + 5
= 28/15 + 75/15
= 103/15
![](https://rs.olm.vn/images/avt/0.png?1311)
a: =11/2*4*5/3
=22*5/3
=110/3
b: =30/12-3/12+20/12
=47/12
c: =28/15+5
=28/15+75/15
=103/15
![](https://rs.olm.vn/images/avt/0.png?1311)
2/5 x 1/2 : 1/3 = 2/5 x 1/2 x 3 = 3/5
1/2 x 1/3 + 1/4= 1/6 + 1/4 = 4/24 + 6/24 = 10/24 =5/12
![](https://rs.olm.vn/images/avt/0.png?1311)
= 3/4 + 5/6 x 3/2 + 1/5
= 3/4 + 5/4 + 1/5
= 15/20 + 25/20 + 4/20
= 44/20
= 11/5
TL
\(\frac{3}{4}+\frac{5}{6}:\frac{2}{3}+\frac{1}{5}\)
\(=\frac{3}{4}+\frac{5}{4}+\frac{1}{5}\)
\(=\frac{11}{5}\)
nhaaaaaaa
HT
![](https://rs.olm.vn/images/avt/0.png?1311)
= 2- 31/40 + 3/2
= 49/40 + 3/2
= 109/40
tk cho mik nha
\(2-\left(\frac{2}{5}+\frac{3}{8}\right)+\frac{3}{2}\)
\(=2-\frac{31}{40}+\frac{3}{2}\)
\(=\frac{49}{40}+\frac{3}{2}\)
\(=\frac{109}{40}\)
ủng hộ tớ nha