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em muốn nhanh thì lần sau em tách câu hỏi ra chứ đừng hỏi nhiều trong một câu em nhé
\(\dfrac{12}{48}\) = \(\dfrac{12:12}{48:12}=\) \(\dfrac{1}{2}\) \(\dfrac{49}{140}\) = \(\dfrac{49:7}{140:7}\) = \(\dfrac{7}{20}\)
\(\dfrac{125}{1000}\) = \(\dfrac{125:125}{1000:125}\) = \(\dfrac{1}{8}\) \(\dfrac{352}{253}\) = \(\dfrac{352:11}{253:11}\)= \(\dfrac{32}{23}\)
\(\dfrac{75}{300}=\) \(\dfrac{75:75}{300:75}\) = \(\dfrac{1}{4}\) \(\dfrac{561}{132}\) = \(\dfrac{561:33}{132:33}\) = \(\dfrac{17}{4}\)
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Rút gọn :\(\frac{12}{48}\)
\(=\frac{12:12}{48:12}\)
\(=\frac{1}{4}\)
Vậy phân số 12/48 rút gọn bằng 1/4
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82/80=82:2/80:2=41/40
36/120=36:12/120:12=3/10
49/98=49:49/98:49=1/2
105/315=105:3/315:3=35/105=35:5/105:5=7/21 hoặc 105/315=105:15/315:15=7/21
114/1152=114:2/1152:2=57/576
t mình nha
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\(\dfrac{16}{26}=\dfrac{8}{13};\dfrac{36}{12}=3;\dfrac{48}{86}=\dfrac{16}{13};\dfrac{80}{65}=\dfrac{16}{13}\)
82/48=41/24
41/24 nhé