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2/5 = 0,4
3/5 = 0,6
3/4 = 0,75
5/8 = 0,625
2 1/2 = 2,5
1/4 = 0,25
4 1/5 = 4,2
5 3/8 = 5,375
Học tốt!!!
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\(y-3\frac{3}{4}=1\frac{1}{6}\)
=> \(y-\frac{15}{4}=\frac{7}{6}\)
=> \(y=\frac{7}{6}+\frac{15}{4}\)
=> \(y=\frac{14}{12}+\frac{45}{12}\)
=> \(y=\frac{59}{12}\)
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7/3/8 - 4/5/8 = 59/8 - 37/8 = 12
2/1/4 +5/1/4 = 9/4 + 21/4 = 15/2
3/1/4 x 2/3/5 = 13/4 x 13/5 =11/20
\(7\frac{3}{8}-4\frac{5}{8}=\frac{59}{8}-\frac{37}{8}=\frac{22}{8}\)\(=\)\(2,75\)
\(2\frac{1}{4}+5\frac{1}{4}=\frac{9}{4}+\frac{21}{4}=\frac{30}{4}=7,5\)
\(3\frac{1}{4}\times2\frac{3}{5}=\frac{13}{4}\times\frac{13}{5}=\frac{169}{20}=8,45\)
#Minyun
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b: \(=8+\dfrac{7}{12}-5-\dfrac{3}{8}=3+\dfrac{5}{24}=\dfrac{77}{24}\)
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\(1\frac{3}{4}+y-\frac{7}{8}=5\)
\(\frac{7}{4}+y-\frac{7}{8}=5\)
\(\frac{7}{4}+y=5+\frac{7}{8}\)
\(\frac{7}{4}+y=\frac{47}{8}\)
\(y=\frac{47}{8}-\frac{7}{4}\)
\(y=\frac{33}{8}\)
Vậy y = \(\frac{33}{8}\)
\(1\frac{3}{4}+y-\frac{7}{8}=5\)
\(\frac{7}{4}+y=5+\frac{7}{8}=\frac{47}{8}\)
\(y=\frac{47}{8}-\frac{7}{4}=\frac{33}{8}\)
KL : y = 33/8
Ai thấy đúng thì ủng hộ nha
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\(\frac{1}{6}:\left(x-\frac{1}{3}\right)-\frac{5}{6}=\frac{5}{9}\times2\frac{8}{6}\)
\(\Leftrightarrow\frac{1}{6}:\left(\frac{3x-1}{3}\right)=\frac{5}{6}+\frac{5}{9}\times2\frac{4}{3}\)
\(\Leftrightarrow\frac{1}{6}\times\frac{3}{3x-1}=\frac{5}{6}+\frac{5}{9}\times\frac{10}{3}\)
\(\Leftrightarrow\frac{1}{2}\times\frac{1}{3x-1}=\frac{45+100}{54}\)
\(\Leftrightarrow\frac{1}{3x-1}=\frac{2\cdot145}{54}=\frac{145}{27}\)
\(\Leftrightarrow3x-1=\frac{27}{145}\Leftrightarrow3x=\frac{27}{145}+1=\frac{172}{145}\)
\(\Leftrightarrow x=\frac{172}{435}\).
5 3/8 : 1 5/8 = 3 4/13 đúng ko bạn ?
\(5\frac{3}{8}:1\frac{5}{8}=\frac{43}{8}:\frac{13}{8}=\frac{43}{8}x\frac{8}{13}=\frac{43}{13}=3\frac{4}{13}\)