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\(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{18:6}{48:6}=\frac{3}{8}\)
\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)
\(\frac{60}{120}=\frac{60:60}{120:60}=\frac{1}{2}\)
\(\frac{6}{9}=\frac{6\div3}{9\div3}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{18\div6}{48\div6}=\frac{3}{8}\)
\(\frac{72}{84}=\frac{72\div12}{84\div12}=\frac{6}{7}\)
\(\frac{60}{120}=\frac{60\div60}{120\div60}=\frac{1}{2}\)
\(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{18:2}{48:2}=\frac{9}{24}\)
\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212:101}{3939:101}=\frac{12}{39}\)
TL
\(\frac{6}{9}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{3}{8}\)
\(\frac{72}{84}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{4}{13}\)
nha bn\
HT
c1
a,3/15 = 3:3/15:3 = 15
33/44 = 33:11/44:11 = 34
2/8 = 2:2/8:2 = 1/4
b,9/12 =9:3/12:3 = 34
24/36 =24:12/36:12 = 23
3/8 = 3:1/8:1 = 3/8
c2
a) =12x(4+6)/24
= 12x10/24
=120/24
=5
b,16x8-16x2/12x4
=16x(8-2)/48
=16x6/48
=2
c3
5/8=45/72
20/15=4/3=96/72
24/32=3/4=54/72
15/18=5/6=60/72
77/99=7/9=56/72
c4
2/3=2/3
12/15=4/5
24/18=4/3
16/48=1/3
75/100=3/4
30/45=2/3
12/36=1/3
20/15=4/3
các phân số lớn hơn 1 luôn có mẫu số bé hơn tử số
vậy các số lớn hơn 1 là 24/18,20/15
k mk nha thank mọi ng'
a, \(\frac{3}{15}=\frac{1}{5}=\frac{4}{20}\); \(\frac{33}{44}=\frac{3}{4}=\frac{15}{20}\); \(\frac{2}{8}=\frac{1}{4}=\frac{5}{20}\)
b, \(\frac{9}{12}=\frac{3}{4}=\frac{18}{24}\); \(\frac{24}{36}=\frac{2}{3}=\frac{16}{24}\); \(\frac{3}{8}=\frac{9}{24}\)
Bài 2 :
a,\(\frac{12x4+12x6}{24}=\frac{12x\left(4+6\right)}{24}=\frac{1x10}{2}=\frac{10}{2}=\frac{5}{1}\)
b, \(\frac{16x8-16x2}{12}=\frac{16x\left(8-2\right)}{12}=\frac{8x6}{6}=\frac{8}{1}\)
\(\frac{12}{30}=\frac{12:6}{30:6}=\frac{2}{5}\)
\(\frac{20}{45}=\frac{20:5}{45:5}=\frac{4}{9}\)
\(\frac{28}{70}=\frac{28:14}{70:14}=\frac{2}{5}\)
\(\frac{34}{51}=\frac{34:17}{51:17}=\frac{2}{3}\)
a) \(\frac{5}{45}=\frac{5\div5}{45\div5}=\frac{1}{9}\)
b) \(\frac{39}{65}=\frac{39\div13}{65\div13}=\frac{3}{5}\)
c) \(\frac{112}{140}=\frac{112\div28}{140\div28}=\frac{4}{5}\)
\(\dfrac{28}{42}=\dfrac{2}{3};\dfrac{60}{45}=\dfrac{4}{3};\dfrac{64}{48}=\dfrac{4}{3};\dfrac{58}{154}=\dfrac{29}{77}\)
nhanh qué