25 × 2 phần
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a) \(\frac{25}{5}\); \(\frac{7}{3}\) ; \(\frac{25}{35}\); \(\frac{5}{8}\); \(\frac{21}{56}\)
b) \(\frac{9}{2}\) ; \(\frac{9}{7}\); \(\frac{25}{50}\); \(\frac{2}{9}\); \(\frac{1}{5}\)
k cho mk nha
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\(\dfrac{5}{27}-\dfrac{2}{-27}=\dfrac{5}{27}+\dfrac{2}{27}=\dfrac{7}{27}\)
\(\dfrac{7}{-25}+\dfrac{-8}{25}=\dfrac{\left(-7\right)+\left(-8\right)}{25}=\dfrac{-15}{25}=\dfrac{-3}{5}\)
\(\dfrac{23}{-11}-\dfrac{-3}{-11}=\dfrac{\left(-23\right)-3}{11}=\dfrac{-26}{11}\)
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Đề bài là: \(\frac{3\text{x}+5}{x^2-5\text{x}+25}-\frac{x}{25-5\text{x}}\)
hay: \(\frac{3\text{x}+5}{\frac{x^2-5\text{x}+25-x}{25-5\text{x}}}\)
thế bạn?
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\(\dfrac{-2}{9}\) . \(\dfrac{5}{2}\) + \(\dfrac{25}{12}\)
= \(\dfrac{-10}{18}\) + \(\dfrac{25}{12}\)
= \(\dfrac{165}{108}\)
25 x 2 = 50
25 × 2 phần 5 = ?