\(25\times35\times11\times4\)

\(=\left(35\times11\right)\times\left(25\times4\right)\)

\(=385\times100\)

\(=38500\)

25x35x11x4

=(25x4)x(35x11)

=100x385

=38500

Tìm x:

3/5 x X = 4/7

X = 4/7 : 3/5

X = 20/21

:)))

a)4/7x(10/4+4/5)

=4/7x33/10=66/35

b)(17/35x35/17)x(11/5x25/11)

=1x5=5

xin 1 like( outo đúng nhé)

a: \(\frac{10}{4}\times\frac47+\frac47\times\frac45\)

\(=\frac47\times\frac52+\frac47\times\frac45\)

\(=\frac47\times\left(\frac52+\frac45\right)=\frac47\times\left(\frac{25}{10}+\frac{8}{10}\right)=\frac47\times\frac{33}{10}=\frac{132}{70}=\frac{66}{35}\)

b: \(\frac{11}{5}\times\frac{17}{35}\times\frac{25}{11}\times\frac{35}{17}\)

\(=\frac{11}{5}\times\frac{25}{11}\times\frac{17}{35}\times\frac{35}{17}\)

\(=\frac{11}{5}\times\frac{25}{11}=\frac{25}{5}=5\)

a: =1h15p+4h45p+2h24p+3h36p

=6h+6h

=12h

b: =2,5h+4,5h+5h

=7h+5h

=12h

c: =10h-8h=2h

\(5\dfrac{3}{4}:3+2\dfrac{1}{4}\times\dfrac{1}{3}-\dfrac{1}{8}=\left(5\dfrac{3}{4}+2\dfrac{1}{4}\right)\times\dfrac{1}{3}-\dfrac{1}{8}\\ =8\times\dfrac{1}{3}-\dfrac{1}{8}=\dfrac{8}{3}-\dfrac{1}{8}=\dfrac{61}{24}\\ ----\\ \dfrac{3}{5}:\dfrac{5}{6}:\dfrac{6}{7}:\dfrac{7}{8}+\dfrac{2}{5}+\dfrac{23}{35}\\ =\dfrac{3}{5}\times\dfrac{6}{5}\times\dfrac{7}{6}\times\dfrac{8}{7}+\dfrac{2}{5}+\dfrac{23}{35}=\dfrac{18}{25}\times\dfrac{4}{3}+\dfrac{2}{5}+\dfrac{23}{35}=\dfrac{353}{175}\)

a: Ta có: 24+35+76+65+22

=(24+76)+(35+65)+22

=222

b: Sửa đề: \(24\cdot35+24\cdot65\)

=24x100

=2400

hihi

\(\frac{37}{35}:\frac{5}{4}:\frac{74}{25}\)

\(=\frac{37}{35}:\left(\frac{5}{4}\times\frac{74}{25}\right)\)

\(=\frac{37}{35}:\frac{37}{10}\)

\(=\frac{2}{7}\)

\(\frac{37}{35}:\frac{5}{4}:\frac{74}{25}\)

=\(\frac{37}{35}x\frac{4}{5}x\frac{25}{74}\)

\(=\left(\frac{37}{35}x\frac{25}{74}\right)x\frac{4}{5}\)

\(=\frac{1}{7}x\frac{5}{2}x\frac{4}{5}\)

\(=\frac{1x5x2x2}{7x2x5}\)

\(=\frac{2}{7}\)

=(134x35)-35x12-11x70

=4690-420-770

=4270-770

=3500

= 3500 nhé

17/35 nhân 9/5 nhân 4/5 

= 17/35 nhân ( 9/5 nhân 4/5 )

= 17/35 nhân 13/5

=  221/175