320% . 15/64 - ( 0,8 +2/3 ) : \(3\dfrac{2}{3}\)
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\(\left(-3,2\right).\dfrac{15}{64}-\left(0,8-2\dfrac{4}{15}\right):3\dfrac{2}{3}\\ =-\dfrac{16}{5}.\dfrac{15}{64}-\left(\dfrac{4}{5}-\dfrac{34}{15}\right):\dfrac{11}{3}\\ =-\dfrac{3}{4}-\left(-\dfrac{22}{15}\right).\dfrac{3}{11}\\ =-\dfrac{3}{4}-\left(-\dfrac{2}{5}\right)=-\dfrac{3}{4}+\dfrac{2}{5}=-\dfrac{7}{20}\)
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\(\left(-3,2\right).\dfrac{-15}{64}+\left(0,8-2\dfrac{4}{15}\right):3\dfrac{2}{3}\)
\(=\left(\dfrac{-16}{5}\right).\dfrac{-15}{64}+\left(\dfrac{4}{5}-\dfrac{34}{15}\right):\dfrac{11}{3}\)
\(=\left(\dfrac{-16}{5}\right).\dfrac{-15}{64}+\left(\dfrac{-22}{15}\right).\dfrac{3}{11}\)
\(=\dfrac{3}{4}+\left(\dfrac{-2}{5}\right)\)
\(=\dfrac{7}{20}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Bạn học lớp nào trường gì mà bt về nhà môn Toán giống của bọn mik zậy ?
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a: \(=\left(9-\dfrac{13}{18}\right):\dfrac{325}{27}-\dfrac{17}{8}:\dfrac{51}{40}\)
\(=\dfrac{149}{18}\cdot\dfrac{27}{325}-\dfrac{17}{8}\cdot\dfrac{40}{51}\)
\(=\dfrac{447}{650}-\dfrac{5}{3}=-\dfrac{1909}{1950}\)
b: \(=\dfrac{48}{64}+\left(\dfrac{4}{5}-2-\dfrac{4}{15}\right):\dfrac{11}{3}\)
\(=\dfrac{3}{4}+\dfrac{-22}{15}\cdot\dfrac{3}{11}=\dfrac{3}{4}-\dfrac{2}{5}=\dfrac{15-8}{20}=\dfrac{7}{20}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(=\dfrac{-16}{5}\cdot\dfrac{-15}{64}+\left(\dfrac{4}{5}-2-\dfrac{4}{15}\right):\dfrac{11}{3}\)
\(=\dfrac{3}{4}+\dfrac{-22}{15}\cdot\dfrac{3}{11}\)
\(=\dfrac{3}{4}+\dfrac{-2}{5}=\dfrac{15-8}{20}=\dfrac{7}{20}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(-3,2\right).\dfrac{-15}{64}+\left(0,8-2\dfrac{4}{15}\right):3\dfrac{2}{3}\)
\(=\dfrac{-32}{10}.\dfrac{-15}{64}+\left(\dfrac{8}{10}-\dfrac{34}{15}\right):\dfrac{11}{3}\)
\(=\dfrac{3}{4}+\dfrac{-22}{15}:\dfrac{11}{3}=\dfrac{3}{4}+\dfrac{-2}{5}=\dfrac{7}{20}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) -1,6: (1+2/3)-76/25 =
-1,6:5/3-76/25=
-24/25-76/25=-100/25=-4
b) -3+1/5 . 5/64 + (0,8-(2+4/15)) : 11/3=
-16/5.5/64+(12/15-34/15):11/3=
-1/4+(-22/15):11/3=
-1/4+(-2/5)=
3/20
tick cho mình nha các bạn
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