\(\left(24\%+\frac{3}{4}+0,76+25\%\right)\times\left(3\frac{5}{7}+1\frac{8}{28}\right)\)

\(=\left(\frac{6}{25}+\frac{3}{4}+0,76+\frac{1}{4}\right)\times\left(\frac{26}{7}+\frac{36}{28}\right)\)

\(=\left(\frac{6}{25}+1+0,76\right)\times\left(\frac{26}{7}+\frac{36}{28}\right)\)

\(=\left(\frac{6}{25}+1,76\right)\times\left(\frac{26}{7}+\frac{9}{7}\right)\)

\(=5\times\left(\frac{6}{25}+1,76\right)\)

= 5 x 2 

= 10

 =( 24% +75% + 76% +25%) x (26/7 + 36/28)

 =(24%+76%+25%+75% )   x (104/28 +36/28)

 =( 1+1) x 5

 = 2 x 5

 = 10

=( 24% +75% + 76% +25%) x (26/7 + 36/28)

 =(24%+76%+25%+75% )   x (104/28 +36/28)

 =( 1+1) x 5

 = 2 x 5

 = 10

2/3 + 7/1 = 2/3 + 7 = 2/3 + 21/3 = 23/3

25/48 + 11/24 = 25/48 + 22/48 = 47/48

5/7 + 3/8 = 40/56 + 21/56 = 61/56

15/24 + 12/6 = 5/8 + 2 = 5/8 + 16/8 = 21/8

5/6 + 4/3 = 5/6 + 8/6 = 13/6

3/8 + 7/12 = 9/24 + 14/24 = 23/24

= 23/3

= 47/48

=61/56

=21/8

=13/6

= 23/24

Cảm ơn mn nhìu nhaaaaaa

\(=\frac{1}{5}\times\frac{1}{3}\times\frac{3}{7}\times\frac{1}{2}\)

\(=\left(\frac{1}{5}\times\frac{1}{2}\right)\times\left(\frac{1}{3}\times\frac{3}{7}\right)\)

\(=\frac{1}{10}\times\frac{1}{7}\)

\(=\frac{1}{70}\)

(45+24-55+76)x(1/5+7/8+7/3+5/7+8/7)

=(45+55-24+76)x(1/5+7/8+7/3+5/7+8/7)

=0         x         (1/5+7/8+7/3+5/7+8/7)

=0

mình trả lời đầu tiên . mình cũng ko copy

olm ơi , sao olm ko tick đúng cho câu trả lời của em ?

a. bằng77

b. bằng 13

lớp 2 đã học cái này rồi à

a. bằng77

b. bằng 13

\(a,\dfrac{-3}{5}:\dfrac{15}{18}=\dfrac{-3}{5}\times\dfrac{18}{15}=\dfrac{-3}{5}\times\dfrac{6}{5}=\dfrac{-18}{25}\\ b,\dfrac{-5}{1}:\left(-4\right)=\left(-5\right):\left(-4\right)=\dfrac{5}{4}\\ c,-28:\dfrac{-7}{25}=-28\times\dfrac{25}{-7}=100\\ d,\dfrac{51}{8}:\dfrac{-2}{10}=\dfrac{51}{8}\times\dfrac{10}{-2}=\dfrac{51}{8}\times\left(-5\right)=\dfrac{-255}{8}\)

\(a)-3/5*18/15=-18/25\)

\(b)-5*1/-4=5/4\)

\(c)-28*25/-7=-100\)

\(d)51/8*10/-2=-255/8\)