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a: \(A=12,\left(4\right)-9,\left(3\right)+0,\left(18\right)\)
\(=\dfrac{112}{9}-\dfrac{28}{3}+\dfrac{2}{11}\)
\(=\dfrac{112}{9}-\dfrac{84}{9}+\dfrac{2}{11}\)
\(=\dfrac{28}{9}+\dfrac{2}{11}\)
\(=\dfrac{326}{99}\)
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\(A=3\div\left(\frac{-3}{2}\right)^2+\frac{1}{9}\times\sqrt{36}\)
\(\Rightarrow A=3\div\frac{9}{4}+\frac{1}{9}\times6\)
\(\Rightarrow A=\frac{4}{3}+\frac{1}{3}\)
\(\Rightarrow A=\frac{5}{3}\)
P/s : Nếu mình tính nhầm thì bỏ qua nhé bạn :P
GIẢI
A = 3 : ( -3/2)^2 + 1/9 +\(\sqrt{ }\)36
A = 3 : ( -9/4 ) +1/9 × 6
A = 3 × 4/9 + 1/9 × 6
A = 4/3 + 1/9 × 6
A = 4/3 + 6/9
A = 4/3 + 2/3
A = 6/3
A = 2
HỌC TỐT ^_^
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\(\dfrac{3}{5}+\dfrac{13}{25}-\dfrac{5}{9}-\dfrac{3}{7}\)
\(=\dfrac{15}{25}+\dfrac{13}{25}-\dfrac{35}{63}-\dfrac{27}{63}\)
\(=\dfrac{28}{25}-\dfrac{62}{63}=\dfrac{214}{1575}\)
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\(\dfrac{0,375-0,3+\dfrac{3}{11}+\dfrac{3}{12}}{-0,53+0,5-\dfrac{5}{11}-\dfrac{5}{12}}+\dfrac{1,5+1-0,75}{2,5+\dfrac{5}{3}-1,25}.\)
\(=\dfrac{\dfrac{3}{8}-\dfrac{3}{10}+\dfrac{3}{11}+\dfrac{3}{12}}{-\dfrac{53}{100}+\dfrac{1}{2}-\dfrac{5}{11}-\dfrac{5}{12}}+\dfrac{\dfrac{3}{2}+1-\dfrac{3}{4}}{\dfrac{5}{2}+\dfrac{5}{3}-\dfrac{5}{4}}.\)
\(=\dfrac{\dfrac{263}{440}}{\dfrac{-1487}{1650}}+\dfrac{\dfrac{7}{4}}{\dfrac{35}{12}}=\dfrac{-3945}{5948}+\dfrac{3}{5}=\dfrac{-1881}{29740}.\)
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\(1)\frac{11}{12}-\frac{5}{12}\left(0,8-\frac{1}{10}\right):\left(-\frac{7}{12}\right)\)
\(=\frac{11}{12}-\frac{5}{12}\times\frac{7}{10}:\left(-\frac{7}{12}\right)\)
\(=\frac{11}{12}-\frac{7}{24}:\left(-\frac{7}{12}\right)\)
\(=\frac{11}{12}-\left(-\frac{1}{2}\right)\)
\(=\frac{17}{12}\)
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a) \((-2).(-2).(-2) =4.(-2) = -8\)
b) \((-0,5).(-0,5) = 0,25\)
c)
\(\begin{array}{l}\frac{1}{2}.\frac{1}{2}.\frac{1}{2}.\frac{1}{2}\\ = \frac{{1.1.1.1}}{{2.2.2.2}}\\ = \frac{1}{{16}}\end{array}\)
các bạn giải giúp mình nhé
\(=\dfrac{1}{11}-\dfrac{1}{11}+\dfrac{1}{41152}=\dfrac{1}{41152}\)