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-24/42=-4/7
-24/36=-2/3
-8/56=-1/7
29/-87=-1/3
51/-18=-17/3
Kết quả rút gọn làn lượt là: 1 2 ; 1 2 ; − 1 5 ; 1 2 ; 3 8 ; 2 3 ; 3 2 ; − 5 9
\(\frac{77}{176}=\frac{77:11}{176:11}=\frac{7}{16}\) ; \(\frac{232323}{474747}=\frac{232323:10101}{474747:10101}=\frac{23}{47}\)
\(\frac{376376}{159159}=\frac{376376:1001}{159159:1001}=\frac{376}{159}\) ; \(\frac{9\cdot8\cdot5}{24\cdot15}=\frac{9\cdot8\cdot5}{8\cdot3\cdot3\cdot5}=\frac{9\cdot8\cdot5}{8\cdot9\cdot5}=1\)
\(\frac{9.8.5}{24.15}\)
\(=\frac{9.8.5}{8.3.3.5}\)
\(=1\)
a) \(\frac{12\cdot13}{5\cdot24}=\frac{13}{5\cdot2}=\frac{13}{10}\)
b)\(\frac{25\cdot17+25\cdot12}{29\cdot13+29\cdot14}=\frac{25\cdot\left(17+12\right)}{29\left(13+14\right)}=\frac{25\cdot29}{29\cdot27}=\frac{25}{27}\)
a, \(\frac{12.13}{5.24}=\frac{12.13}{5.2.12}=\frac{13}{10}\)
b, \(\frac{25.17+25.12}{29.13+29.14}=\frac{25.\left(17+12\right)}{29.\left(13+14\right)}=\frac{25.29}{29.27}=\frac{25}{27}\)
6/9=6:3/9:3=2/3
6/24=6:6/24:6=1/4
12/24=12:12/24:12=1/2
6/14=6:2/14:2=3/7
a ) − 18 − 27 = ( − 18 ) : ( − 9 ) ( − 27 ) : ( − 9 ) = 2 3
b ) 45 − 24 = 45 : ( − 3 ) ( − 24 ) : ( − 3 ) = − 15 8
Ta có:
\(\begin{array}{l}\frac{{24}}{{108}} = \frac{{24:12}}{{108:12}} = \frac{2}{9};\\\frac{{80}}{{32}} = \frac{{80:16}}{{32:16}} = \frac{5}{2}\end{array}\)
-24/5 là phân số tối giản rồi nha.