a) 4/5 x ( 5/6 + 1/3 ) b) 4 ∶ 3/5- 5/6 c) 7/4 + 5/12 x 8
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a, 4/5 x ( 5/6 + 1/3 )
= 4/5 x 7/6
= 14/15
b, 4 : 3/5 - 5/6
= 20/3 - 5/6
= 35/6
c, 7/4 + 5/12 x 8
= 7/4 + 10/3
= 61/12
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\(4-\frac{5}{12}\times\frac{9}{10}\)
\(=4-\frac{1}{2}\)
\(=\frac{7}{2}\)
~HT~
\(4-\frac{5}{12}\times\frac{9}{10}\rightarrow4-\frac{3}{8}\rightarrow\frac{32}{8}-\frac{2}{8}=\frac{30}{8}=\frac{15}{4}\)
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A\(\frac{4}{5}\times\left(\frac{5}{6}+\frac{1}{3}\right)\)
\(=\frac{4}{5}\times\frac{7}{6}\)
\(=\frac{28}{30}=\frac{14}{15}\)
B\(4:\frac{3}{5}-\frac{5}{6}\)
\(=\frac{20}{3}-\frac{5}{6}\)
\(=\frac{35}{6}\)
C\(\frac{7}{4}+\frac{5}{12}\times8\)
\(=\frac{7}{4}+\frac{10}{3}\)
\(=\frac{61}{12}\)
a) 4/5 x ( 5/6 + 1/3 ) = 4/5 x 21/18 = 84/90
b) 4 ∶ 3/5- 5/6 = 20/5 - 5/6 = 95/30
c) 7/4 + 5/12 x 8 = 7/4 +40/12 = 244/96
K nha
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