2/5x1/4:3/2
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\dfrac{11}{3}-\dfrac{2}{3}\left(2\dfrac{2}{5}x\dfrac{1}{4}+0,2\right)\)
\(\Leftrightarrow3\left(\dfrac{12}{5}\times\dfrac{1}{4}+0,2\right)\)
\(\Leftrightarrow3\left(\dfrac{3}{5}+\dfrac{1}{5}\right)\)
\(\Leftrightarrow3\times\dfrac{4}{5}\)
\(\Leftrightarrow\dfrac{12}{5}\)
\(\dfrac{11}{3}-\dfrac{2}{3}\times\left(2\dfrac{2}{5}+\dfrac{1}{4}+0,2\right)\)
\(=\dfrac{9}{3}\times\left(\dfrac{12}{5}+\dfrac{1}{4}+\dfrac{1}{5}\right)\)
\(=3\times\left(\dfrac{13}{5}+\dfrac{1}{4}\right)\)
\(=3\times\dfrac{57}{20}\)
\(=\dfrac{171}{20}\)
2/5*1/4:3/8
=3/20:3/8
=3/20*8/3
=8/20
=2/5
Ai tích mk mk tích lại
`1/5xx1/2:3/10`
`=1/10xx10/3`
`=1/3`
`1/2xx1/3:1/4`
`=1/6xx4/1`
`=2/3`
a) \(\dfrac{1}{5}\times\dfrac{1}{2}:\dfrac{3}{10}=\dfrac{1}{5}\times\dfrac{1}{2}\times\dfrac{10}{3}=\dfrac{1\times1\times10}{5\times2\times3}=\dfrac{10}{30}=\dfrac{1}{3}\)
b) \(\dfrac{1}{2}\times\dfrac{1}{3}:\dfrac{1}{4}=\dfrac{1}{2}\times\dfrac{1}{3}\times4=\dfrac{1\times1\times4}{2\times3}=\dfrac{4}{6}=\dfrac{2}{3}\)
`5/39xx(7 4/5xx1 2/3+8 1/3xx7 4/5)`
`=5/39xx(39/5xx5/3+25/3xx39/5)`
`=5/39xx39/5(5/3+25/3)`
`=1xx30/3`
`=10`
\(\dfrac{4}{5}-\dfrac{2}{5}\times\dfrac{1}{4}=\dfrac{4}{5}-\dfrac{1}{10}=\dfrac{8}{10}-\dfrac{1}{10}=\dfrac{7}{10}\)
\(\dfrac{1}{4}+\dfrac{3}{4}:\dfrac{1}{8}=\dfrac{1}{4}+\dfrac{3}{4}\times8=\dfrac{1}{4}+6=\dfrac{1}{4}+\dfrac{24}{4}=\dfrac{25}{4}\)
\(\)\(\dfrac{11}{10}-\dfrac{2}{5}:\dfrac{1}{3}=\dfrac{11}{10}-\dfrac{2}{5}\times3=\dfrac{11}{10}-\dfrac{6}{5}=\dfrac{11}{10}-\dfrac{12}{10}=-\dfrac{1}{10}\)
4/5-2/5.1/4
=4/5-1/10
=8/10-1/10
=7/10
1/4+3/4:1/8
=1/4+3/4.8
=1/4+6
=1/4+24/4
=25/4
11/10-2/5:1/3
=11/10-2/5.3
=11/10-6/5
=11/10-12/10
=-1/10
\(M=\frac{1}{2}:\left(\frac{1}{3}:\frac{1}{4}:\frac{1}{5}\times\frac{1}{120}\right)=2008\)
\(M=\frac{1}{2}:\left(\frac{1}{3}\times\frac{4}{1}\times\frac{5}{1}\times\frac{1}{120}\right)=2008\)
\(M=\frac{1}{2}:\left(\frac{4}{3}\times\frac{1}{1}\times\frac{1}{24}\right)=2008\)
\(M=\frac{1}{2}:\left(\frac{4}{3}\times\frac{1}{24}\right)=2008\)
\(M=\frac{1}{2}:\left(\frac{1}{3}\times\frac{1}{6}\right)=2008\)
\(M=\frac{1}{2}:\frac{1}{18}=2008\)
\(M=\frac{1}{2}\times\frac{18}{1}=2008\)
\(M=\frac{18}{2}=2008\)
\(M=9=2008\)
2/5x1/4:3/2
=2/20 : 3/2
=4/60=1/15