\(-\dfrac{41}{34}.\dfrac{3}{25}=\dfrac{-123}{850}\)
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Tìm x:
\(\dfrac{39}{41}-\dfrac{25}{x}=\dfrac{-47}{41}.\dfrac{16}{7}\)
HL
11 tháng 4 2022 lúc 13:53
a. \(\left(\dfrac{23}{41}-\dfrac{15}{82}\right).\dfrac{41}{25}\)
1, dfrac{-5}{7} . dfrac{2}{11} + dfrac{-5}{7} . dfrac{9}{11} + 1dfrac{5}{7}
2,-3dfrac{4}{13} . 15dfrac{3}{41} + 3dfrac{4}{13} . 2dfrac{3}{41}
3, dfrac{4}{5} . 15dfrac{1}{4} - dfrac{4}{5} . 15dfrac{1}{3} + dfrac{11}{30}
4,dfrac{4}{20} + dfrac{16}{42} + dfrac{6}{15} - dfrac{3}{5} + dfrac{2}{21} - dfrac{10}{21} + dfrac{3}{10}
Giúp mik nha. Cảm ơn
Đọc tiếp
1, \(\dfrac{-5}{7}\) . \(\dfrac{2}{11}\) + \(\dfrac{-5}{7}\) . \(\dfrac{9}{11}\) + \(1\dfrac{5}{7}\)
2,\(-3\dfrac{4}{13}\) . \(15\dfrac{3}{41}\) + \(3\dfrac{4}{13}\) . \(2\dfrac{3}{41}\)
3, \(\dfrac{4}{5}\) . \(15\dfrac{1}{4}\) - \(\dfrac{4}{5}\) . \(15\dfrac{1}{3}\) + \(\dfrac{11}{30}\)
4,\(\dfrac{4}{20}\) + \(\dfrac{16}{42}\) + \(\dfrac{6}{15}\) - \(\dfrac{3}{5}\) + \(\dfrac{2}{21}\) - \(\dfrac{10}{21}\) + \(\dfrac{3}{10}\)
Giúp mik nha. Cảm ơn
Cho \(A=\dfrac{3^2}{1.4}+\dfrac{3^2}{4.7}+\dfrac{3^2}{7.10}+...+\dfrac{3^2}{31.24}\).Giá trị của \(A\) là:
\(A.\dfrac{99}{34}B.3\dfrac{33}{34}C.\dfrac{33}{34}D.\)Tất cả đều sai
giúp!
KJ
28 tháng 1 2022 lúc 22:23
\(l,\dfrac{\dfrac{3}{41}-\dfrac{12}{47}+\dfrac{27}{53}}{\dfrac{4}{41}-\dfrac{16}{47}+\dfrac{36}{53}}\)
\(m,\left(3-2\dfrac{1}{3}+\dfrac{1}{4}\right):\left(4-5\dfrac{1}{6}+2\dfrac{1}{4}\right)\)
\(n,F=\dfrac{4}{2.4}+\dfrac{4}{4.6}+\dfrac{4}{6.8}+...+\dfrac{4}{2008.2010}\)
\(p,F=\dfrac{1}{18}+\dfrac{1}{54}+\dfrac{1}{108}+...+\dfrac{1}{990}\)
c, dfrac{-3}{8}.dfrac{2}{5}+dfrac{-3}{8}.dfrac{14}{5} d, (dfrac{1}{4}+dfrac{11}{9}):dfrac{34}{5}+(dfrac{-2}{9}+dfrac{29}{4}):dfrac{34}{5}
Đọc tiếp
c, \(\dfrac{-3}{8}\).\(\dfrac{2}{5}\)+\(\dfrac{-3}{8}\).\(\dfrac{14}{5}\) d, (\(\dfrac{1}{4}\)+\(\dfrac{11}{9}\)):\(\dfrac{34}{5}\)+(\(\dfrac{-2}{9}\)+\(\dfrac{29}{4}\)):\(\dfrac{34}{5}\)
5. dfrac{-3}{7} + dfrac{5}{13} + dfrac{-4}{12}6. dfrac{-5}{21} + dfrac{-2}{21} + dfrac{8}{24}7. dfrac{5}{13} + dfrac{-5}{7} + dfrac{-20}{41} + dfrac{8}{13} + dfrac{-21}{41}Giúp tớ với ạ🥺👉🏻👈🏻 Tớ cảm ơn nhiều🥰
Đọc tiếp
5. \(\dfrac{-3}{7}\) + \(\dfrac{5}{13}\) + \(\dfrac{-4}{12}\)
6. \(\dfrac{-5}{21}\) + \(\dfrac{-2}{21}\) + \(\dfrac{8}{24}\)
7. \(\dfrac{5}{13}\) + \(\dfrac{-5}{7}\) + \(\dfrac{-20}{41}\) + \(\dfrac{8}{13}\) + \(\dfrac{-21}{41}\)
Giúp tớ với ạ🥺👉🏻👈🏻 Tớ cảm ơn nhiều🥰
\(\dfrac{-5}{7}.\dfrac{19}{41}+\dfrac{5}{7}.\dfrac{-21}{41}+\dfrac{5}{7}\)
\(\dfrac{8}{7}\)+419+\(\dfrac{-1}{7}\)
\(\dfrac{-4}{41}\)+(\(\dfrac{-37}{41}\)+2)