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11/125-17/18-5/7+4/9+17/14

YN
19 tháng 10 2021 lúc 19:52

\(\frac{11}{125}-\frac{17}{18}-\frac{5}{7}+\frac{4}{9}+\frac{17}{14}\)

\(=\frac{11}{125}+\left(\frac{-17}{18}+\frac{4}{8}\right)+\left(\frac{-5}{7}+\frac{17}{14}\right)\)

\(=11+\left(\frac{-17}{18}+\frac{8}{18}\right)+\left(\frac{-10}{14}+\frac{17}{14}\right)\)

\(=\frac{11}{125}+\left(\frac{-9}{18}\right)+\frac{7}{14}\)

\(=\frac{11}{125}+\left(\frac{-1}{2}+\frac{1}{2}\right)\)

\(=\frac{11}{125}+0\)

\(=\frac{11}{125}\)

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