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<=> 24/23 + 2/21 - 1/23+19/4+ 1
= Bấm máy tính ra 575/84
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Bài 1: Tính
a)\(\left(\frac{9}{25}-2\cdot18\right):\left(3\frac{4}{5}+0,2\right)\)
b)\(\frac{3}{8}\cdot19\frac{1}{3}-\frac{3}{8}\cdot33\frac{1}{3}\)
c)\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)
d)\(\frac{21}{47}+\frac{9}{45}+\frac{26}{47}+\frac{4}{5}\)
LÀM NHANH GIÚP MIK ,MIK TICK CHO Ạ
a. \(\frac{5}{21}+0,5-\frac{19}{23}+\frac{16}{21}-\frac{4}{23}\)
giúp mk vs ai nhanh nhất mk tk cho
Giai giup mk
a) (-2,5) . (-7,5) . (-4)
b)\(1\frac{4}{23}+\frac{8}{21}-\frac{4}{23}+0,6+\frac{13}{21}\)
c)\(\frac{2}{7}.15\frac{1}{3}-\frac{2}{7}.20\frac{1}{3}+4\frac{1}{3}\)
d)\(2\frac{1}{4}:\left(\frac{-3}{5}\right)-1\frac{1}{4}:\left(\frac{-3}{5}\right)\)
\(23\frac{1}{4}:\frac{5}{7}-13\frac{1}{4}:\frac{5}{7}\)
\(\frac{5}{21}+0,5-\frac{19}{23}+\frac{16}{21}-\frac{4}{23}\)
hình như là nhóm các phân số cùng mẫu vào 1 nhóm
mk chỉ bt có vậy thôi
giúp mk với mk tk cho
Tính giá trị biểu thức1.Afrac{1}{5}+frac{3}{17}-frac{4}{3}+left(frac{4}{5}-frac{3}{17}+frac{1}{3}right)-frac{1}{7}+left[frac{-14}{30}right]2.Bleft(frac{5}{8}-frac{4}{12}+frac{3}{2}right)-left(frac{5}{8}+frac{9}{13}right)-left[frac{-3}{2}right]+frac{7}{-15}3.Cfrac{5}{18}+frac{8}{19}-frac{7}{21}+left(frac{-10}{36}+frac{11}{19}+frac{1}{3}right)-frac{5}{8}4.Dfrac{1}{9}-left[frac{-5}{23}right]-left(frac{-5}{23}+frac{1}{9}+frac{25}{7}right)+frac{50}{14}-frac{7}{30}5.Efrac{1}{13}+left(frac{-5}{18}-frac...
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Tính giá trị biểu thức
\(1.A=\frac{1}{5}+\frac{3}{17}-\frac{4}{3}+\left(\frac{4}{5}-\frac{3}{17}+\frac{1}{3}\right)-\frac{1}{7}+\left[\frac{-14}{30}\right]\)
\(2.B=\left(\frac{5}{8}-\frac{4}{12}+\frac{3}{2}\right)-\left(\frac{5}{8}+\frac{9}{13}\right)-\left[\frac{-3}{2}\right]+\frac{7}{-15}\)
\(3.C=\frac{5}{18}+\frac{8}{19}-\frac{7}{21}+\left(\frac{-10}{36}+\frac{11}{19}+\frac{1}{3}\right)-\frac{5}{8}\)
\(4.D=\frac{1}{9}-\left[\frac{-5}{23}\right]-\left(\frac{-5}{23}+\frac{1}{9}+\frac{25}{7}\right)+\frac{50}{14}-\frac{7}{30}\)
\(5.E=\frac{1}{13}+\left(\frac{-5}{18}-\frac{1}{13}+\frac{12}{17}\right)+\left(\frac{12}{17}+\frac{5}{18}+\frac{7}{5}\right)\)
\(6.F=\frac{15}{14}-\left(\frac{17}{23}-\frac{80}{87}+\frac{5}{4}\right)+\left(\frac{12}{17}-\frac{15}{14}+\frac{1}{4}\right)\)
\(7.G=\frac{1}{25}-\frac{4}{27}+\left(\frac{-23}{27}+\frac{-1}{25}-\frac{5}{43}\right)+\frac{5}{43}-\frac{4}{7}\)
\(8.H=\frac{4}{15}-\frac{23}{28}-\left(\frac{-23}{28}+\frac{-11}{15}-\frac{29}{27}\right)-\frac{2}{27}\)
\(9.K=\frac{1}{16}-\frac{5}{21}+\left(\frac{-1}{16}+\frac{-3}{5}-\frac{-5}{21}\right)+\frac{-2}{5}+\frac{3}{4}\)
\(10.L=\frac{7}{12}+\frac{15}{14}-\left(\frac{14}{22}+\frac{-1}{14}+\frac{5}{21}\right)-\frac{-5}{21}+\frac{3}{5}\)
Tính giá trị biểu thức:
3) C= \(\frac{5}{18}+\frac{8}{19}-\frac{7}{21}+\left(\frac{-10}{36}+\frac{11}{19}+\frac{1}{3}\right)-\frac{5}{8}\)\(\frac{5}{8}\)
4) D= \(\frac{1}{9}-\left|\frac{-5}{23}\right|-\left(\frac{-5}{23}+\frac{1}{9}+\frac{25}{7}\right)+\frac{50}{4}-\frac{7}{30}\)
[12,(1) - 2,3(6)] : 4,(21)[12 + 0,(1) - 2,3 + 0,0(6)] : 4,(21)[12 + frac{1}{9} - frac{23}{10} + frac{1}{10} . 0,(6)] : 4,(21)[frac{12}{9} - frac{23}{10} + frac{1}{10} . frac{6}{9}] : 4,(21)[frac{4}{3}- frac{23}{10} + frac{1}{15}] : 4,(21)[frac{4}{3}- frac{71}{30}] : 4,(21) frac{-31}{30}: 4,(21) frac{-31}{30}: 4 + 0,(21) frac{-31}{30}: 4 + frac{21}{99}frac{-31}{30}: frac{139}{33} frac{-341}{1390}Mik làm bài toán mà ko biết có đúng hay ko mong các bn góp ý ^-^
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[12,(1) - 2,3(6)] : 4,(21)
=[12 + 0,(1) - 2,3 + 0,0(6)] : 4,(21)
=[12 + \(\frac{1}{9}\) - \(\frac{23}{10}\) + \(\frac{1}{10}\) . 0,(6)] : 4,(21)
=[\(\frac{12}{9}\) - \(\frac{23}{10}\) + \(\frac{1}{10}\) . \(\frac{6}{9}\)] : 4,(21)
=[\(\frac{4}{3}\)- \(\frac{23}{10}\) + \(\frac{1}{15}\)] : 4,(21)
=[\(\frac{4}{3}\)- \(\frac{71}{30}\)] : 4,(21)
= \(\frac{-31}{30}\): 4,(21)
= \(\frac{-31}{30}\): 4 + 0,(21)
= \(\frac{-31}{30}\): 4 + \(\frac{21}{99}\)
=\(\frac{-31}{30}\): \(\frac{139}{33}\)
= \(\frac{-341}{1390}\)
Mik làm bài toán mà ko biết có đúng hay ko mong các bn góp ý ^-^
\(\frac{4}{23}+\frac{15}{21}-\frac{27}{23}+\frac{6}{21}+\frac{1}{2}\)
a)
\(\frac{-1}{5}+\frac{4}{2}.\frac{5}{2}-\sqrt{25}\) b)\(23\frac{1}{4}.\frac{7}{5}-13\frac{1}{4}:\frac{5}{7}\)
Các bn lm nhanh giúp mik nhé