\(\frac{56}{24}=\frac{7}{3};\frac{33}{77}=\frac{3}{7}\)

56/24=7/3

33/77=3/7

k mik

56/24 = 7/3

33/77 = 3/7

\(\dfrac{5}{15}=\dfrac{5:5}{15:5}=\dfrac{1}{3}\\ \dfrac{28}{56}=\dfrac{28:28}{56:28}=\dfrac{1}{2}\\ \dfrac{48}{96}=\dfrac{48:48}{96:48}=\dfrac{1}{2}\\ \dfrac{15}{120}=\dfrac{15:15}{120:15}=\dfrac{1}{8}\\ \dfrac{60}{80}=\dfrac{60:20}{80:20}=\dfrac{3}{4}\)

còn phân số 24 / 30 bn ILoveMath ơi

\(a,\frac{24}{56}=\frac{24:8}{56:8}=\frac{3}{7}\)

\(b,\frac{120}{90}=\frac{120:30}{90:30}=\frac{4}{3}\)

a. 3/7

b. 4/3

              _Trả lời :

   a) 24/56 = 24 : 8 / 56 : 8 = 3/7

   b) 120/90 = 120 : 30 / 90 : 30 = 4/3

                    #Hoq chắc _ Baccanngon

\(1,\)Rút gọn : \(\frac{-24}{56};\frac{1212}{-4545}\)

\(\frac{-24}{56}=\frac{-24:8}{56:8}=\frac{-3}{7}\)

\(\frac{1212}{-4545}=\frac{1212:(-101)}{(-4545):(-101)}=\frac{-12}{45}=\frac{-4}{15}\)

Tự so sánh

\(\frac{17}{34}=\frac{1}{2}\), \(\frac{60}{70}=\frac{6}{7}\),\(\frac{126}{255}=\frac{42}{85}\),\(\frac{24}{72}=\frac{1}{3}\), \(\frac{105}{30}=\frac{7}{2}\), \(\frac{78}{56}=\frac{39}{28}\)

\(\frac{1}{2},\frac{6}{7},\frac{42}{85},\frac{1}{3},\frac{7}{2},\frac{39}{28}\)

k mk mk kb

17/34 = 1/2 ; 60/70 = 6/7 ; 126/255 = 42/85 ; 24/72 = 1/3 ; 105/30 = 7/2 ; 78/56 = 39/28

45/27=5/3

25/50=1/2

12/21=4/7

24/56=3/7

22/121=2/11

196/28=7

26/169=2/13

221/187=13/11

b: \(=\dfrac{3}{7}\cdot\dfrac{5}{7}\cdot\dfrac{6}{7}=\dfrac{90}{343}\)

c: \(=\dfrac{4}{9}\cdot\dfrac{5}{9}\cdot\dfrac{3}{7}=\dfrac{20}{189}\)

d: \(=\dfrac{1}{3}\cdot\dfrac{5}{12}\cdot\dfrac{5}{12}=\dfrac{25}{432}\)

d