Các câu hỏi tương tự
Tính:
\(\frac{-7}{13}+\frac{5}{11}-\frac{6}{13}+\frac{7}{22}\)\(\frac{-4}{5}-\frac{2}{17}+\frac{3}{10}+\frac{15}{17}\)
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...
Đọc tiếp
Tính giá trị biểu thức
\(1.A=\frac{1}{5}+\frac{3}{17}-\frac{4}{3}+\left(\frac{4}{5}-\frac{3}{17}+\frac{1}{3}\right)-\frac{1}{7}+\left[\frac{-14}{30}\right]\)
\(2.B=\left(\frac{5}{8}-\frac{4}{12}+\frac{3}{2}\right)-\left(\frac{5}{8}+\frac{9}{13}\right)-\left[\frac{-3}{2}\right]+\frac{7}{-15}\)
\(3.C=\frac{5}{18}+\frac{8}{19}-\frac{7}{21}+\left(\frac{-10}{36}+\frac{11}{19}+\frac{1}{3}\right)-\frac{5}{8}\)
\(4.D=\frac{1}{9}-\left[\frac{-5}{23}\right]-\left(\frac{-5}{23}+\frac{1}{9}+\frac{25}{7}\right)+\frac{50}{14}-\frac{7}{30}\)
\(5.E=\frac{1}{13}+\left(\frac{-5}{18}-\frac{1}{13}+\frac{12}{17}\right)+\left(\frac{12}{17}+\frac{5}{18}+\frac{7}{5}\right)\)
\(6.F=\frac{15}{14}-\left(\frac{17}{23}-\frac{80}{87}+\frac{5}{4}\right)+\left(\frac{12}{17}-\frac{15}{14}+\frac{1}{4}\right)\)
\(7.G=\frac{1}{25}-\frac{4}{27}+\left(\frac{-23}{27}+\frac{-1}{25}-\frac{5}{43}\right)+\frac{5}{43}-\frac{4}{7}\)
\(8.H=\frac{4}{15}-\frac{23}{28}-\left(\frac{-23}{28}+\frac{-11}{15}-\frac{29}{27}\right)-\frac{2}{27}\)
\(9.K=\frac{1}{16}-\frac{5}{21}+\left(\frac{-1}{16}+\frac{-3}{5}-\frac{-5}{21}\right)+\frac{-2}{5}+\frac{3}{4}\)
\(10.L=\frac{7}{12}+\frac{15}{14}-\left(\frac{14}{22}+\frac{-1}{14}+\frac{5}{21}\right)-\frac{-5}{21}+\frac{3}{5}\)
\(A=\frac{\frac{1}{11}-\frac{1}{13}-\frac{1}{17}}{\frac{5}{11}-\frac{5}{13}-\frac{5}{17}}+\frac{\frac{-3}{3}-\frac{2}{9}-\frac{2}{27}+\frac{2}{81}}{\frac{7}{3}-\frac{7}{9}-\frac{7}{27}+\frac{7}{81}}\)
bài 1: a) frac{-7}{12} + frac{11}{20} - frac{8}{15}b) frac{9}{11} +left(frac{-2}{5}+frac{1}{6}right) :frac{11}{30}c) frac{-17}{25}.frac{20}{33}+frac{-17}{25}.frac{13}{33}+frac{-3}{25}bài 2.a) frac{3}{5}.frac{4}{9}+frac{-3}{10}.frac{4}{9}+1frac{3}{10}b) 0,7 + frac{8}{5} : 3 - frac{7}{30}bài 3.a) frac{13}{30}+frac{11}{20}-frac{7}{15}b) frac{-5}{72}:left(frac{3}{8}.frac{7}{9}right)c) frac{-23}{25}.frac{10}{13}+frac{-23}{25}.frac{3}{13}+frac{-27}{25}
Đọc tiếp
bài 1: a) \(\frac{-7}{12}\) + \(\frac{11}{20}\) - \(\frac{8}{15}\)
b) \(\frac{9}{11}\) +\(\left(\frac{-2}{5}+\frac{1}{6}\right)\) :\(\frac{11}{30}\)
c) \(\frac{-17}{25}.\frac{20}{33}+\frac{-17}{25}.\frac{13}{33}+\frac{-3}{25}\)
bài 2.
a) \(\frac{3}{5}.\frac{4}{9}+\frac{-3}{10}.\frac{4}{9}+1\frac{3}{10}\)
b) 0,7 + \(\frac{8}{5}\) : 3 - \(\frac{7}{30}\)
bài 3.
a) \(\frac{13}{30}+\frac{11}{20}-\frac{7}{15}\)
b) \(\frac{-5}{72}:\left(\frac{3}{8}.\frac{7}{9}\right)\)
c) \(\frac{-23}{25}.\frac{10}{13}+\frac{-23}{25}.\frac{3}{13}+\frac{-27}{25}\)
1.Tìm x :a)1 - 7x 3x - 42.Tínha)-2013 . 2028 + 4028 . 26b)left(frac{1515}{1616}+frac{10}{170}right)-left(frac{150}{160}-frac{16}{17}right)c)frac{1}{3^1}+frac{1}{3^2}+frac{1}{3^3}+...frac{1}{3^{99}}d)frac{5}{17}+frac{-4}{7}-frac{20}{31}+frac{12}{17}-frac{11}{31}e)frac{155-frac{10}{7}-frac{5}{11}+frac{5}{23}}{403-frac{20}{7}-frac{13}{13}_{ }+frac{13}{23}}
Đọc tiếp
1.Tìm x :
a)1 - 7x = 3x - 4
2.Tính
a)-2013 . 2028 + 4028 . 26
b)\(\left(\frac{1515}{1616}+\frac{10}{170}\right)-\left(\frac{150}{160}-\frac{16}{17}\right)\)
c)\(\frac{1}{3^1}+\frac{1}{3^2}+\frac{1}{3^3}+...\frac{1}{3^{99}}\)
d)\(\frac{5}{17}+\frac{-4}{7}-\frac{20}{31}+\frac{12}{17}-\frac{11}{31}\)
e)\(\frac{155-\frac{10}{7}-\frac{5}{11}+\frac{5}{23}}{403-\frac{20}{7}-\frac{13}{13}_{ }+\frac{13}{23}}\)
Bài 1:
1) \(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right).230\frac{1}{25}+46\frac{3}{4}}{\left(1\frac{3}{7}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
2) \(\frac{0,375-0,3+\frac{3}{11}-\frac{3}{17}}{0,625-0,5+\frac{5}{11}-\frac{5}{17}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
\(\frac{7}{3\cdot4}-\frac{9}{4\cdot5}+\frac{11}{5\cdot6}-\frac{13}{6\cdot7}+\frac{15}{7\cdot8}-\frac{17}{8\cdot9}+\frac{19}{9\cdot10}\)
Tinh nhanh :\(-19\frac{9}{17}+18\frac{4}{17}:\frac{11}{7}+\frac{11}{13}+2\frac{3}{4}-2,2.\left(0,75-0,6+\frac{3}{7}+\frac{3}{13}\right)\)
tính:
a) \(\frac{11}{125}-\frac{17}{18}-\frac{5}{7}+\frac{4}{9}+\frac{17}{14}\)
b) \(\frac{3}{14}:\frac{1}{28}-\frac{13}{21}:\frac{1}{28}+\frac{29}{42}:\frac{1}{28}-8\)