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\(\frac{23}{12}\)
\(\frac{314}{105}\)
\(\frac{59}{60}\)
\(\frac{199}{90}\)
\(\frac{1}{18}\)
\(\frac{13}{36}\)
\(\frac{4}{221}\)
\(\frac{4}{85}\)
thu tu tu be den lon la 5/6 ;; 8 /9 ;;; 17/18
bai 2
3/5 <1 ;;;;;;;;; 6/4 >1 ;;;;;;; 1 > 7/8
*** minh nah
1 .
Ta có :8/9 = 16/18
5/6 = 15/18
Vì : 15/18 < 16/18 < 17/18
=> 5/6 < 8/9 < 17/18
2 .
3/5 < 1
9/4 > 1
1> 7/8
k nhé tớ k lại cho
hihihiihih ^_^ ~ hihihihihih
\(\frac{9}{5}:\frac{17}{15}+\frac{8}{5}:\frac{17}{15}\)
\(=\frac{9}{5}\times\frac{15}{17}+\frac{8}{5}\times\frac{15}{17}\)
\(=\frac{15}{17}\times\left(\frac{9}{5}+\frac{8}{5}\right)\)
\(=\frac{15}{17}\times\frac{17}{5}\)
\(=3\)
h minh nhen
a, 6/9+5/7+1/3=2/3+5/7+1/3=5/7+1=12/7
b, 17/7+6/5-20/14=17/7+6/5-10/7=6/5+1=11/5
c,2/5x1/4+3/4x2/5=2/5x(1/4+3/4)=2/5x1=2/5
d, 6/11:4/6+5/11:2/3=6/11:2/3+5/11:2/3=(6/11+5/11):2/3=3/2
nha
a) \(\frac{5}{6};\frac{8}{9};\frac{17}{18}\)
b) \(\frac{1}{2};\frac{5}{8};\frac{3}{4}\)
~HT~
a ) Ta có :
\(\frac{8}{9}=\frac{8\times2}{9\times2}=\frac{16}{18}\)
\(\frac{5}{6}=\frac{5\times3}{6\times3}=\frac{15}{18}\)
Ta thấy : \(15< 16< 17\)
\(\Rightarrow\)\(\frac{15}{18}< \frac{16}{18}< \frac{17}{18}\)hay \(\frac{5}{6}< \frac{8}{9}< \frac{17}{18}\)
b ) Ta có :
\(\frac{1}{2}=\frac{1\times4}{2\times4}=\frac{4}{8}\)
\(\frac{3}{4}=\frac{3\times2}{4\times2}=\frac{6}{8}\)
Ta thấy :\(4< 5< 6\)
\(\Rightarrow\)\(\frac{4}{8}< \frac{5}{8}< \frac{6}{8}\)hay \(\frac{1}{2}< \frac{5}{8}< \frac{3}{4}\)
\(\frac{1}{6}.\frac{1}{3}+\frac{17}{6}.\frac{1}{3}+\frac{2015}{2016}-1\)
\(=\frac{1}{3}\left(\frac{1}{6}+\frac{17}{6}\right)+\frac{2015}{2016}-1\)
\(=\frac{1}{3}.3+\frac{2015}{2016}-1\)
\(=1-1+\frac{2015}{2016}=\frac{2015}{2016}\)
\(\frac{1}{6}\times\frac{1}{3}+\frac{17}{6}\times\frac{1}{3}+\frac{2015}{2016}-1\)
\(=\left(\frac{1}{6}+\frac{17}{6}\right)\times\frac{1}{3}+\frac{2015}{2016}-1\)
\(=3\times\frac{1}{3}+\frac{2015}{2016}-1\)
\(=1+\frac{2015}{2016}-1\)
\(=0+\frac{2015}{2016}=\frac{2015}{2016}\)
\(\frac{9}{15}< \frac{9}{17}\)
\(\frac{12}{25}=\frac{36}{75}\)
\(\frac{17}{15}< \frac{5}{4}\)
\(6\frac{5}{9}-\frac{8}{17}-\frac{3}{17}-\frac{6}{17}\)
\(=\frac{59}{9}-\left(\frac{8}{17}+\frac{3}{17}+\frac{6}{17}\right)\)
\(=\frac{59}{9}-\frac{17}{17}\)
\(=\frac{50}{9}\)