Question

[Song Trần]

Tính giá trị biểu thức:

F= \(\frac{15}{14}-\left(\frac{17}{23}-\frac{80}{87}+\frac{5}{4}\right)+\left(\frac{17}{23}-\frac{15}{4}+\frac{1}{4}\right)\)

Answer 1

[Sherlockichi Kudoyle]

\(F=\frac{15}{14}-\left(\frac{17}{23}-\frac{80}{87}+\frac{5}{4}\right)+\left(\frac{17}{23}-\frac{15}{4}+\frac{1}{4}\right)\)

\(F=\frac{15}{14}-\frac{17}{23}+\frac{80}{87}-\frac{5}{4}+\frac{17}{23}-\frac{15}{4}+\frac{1}{4}\)

\(F=\frac{15}{14}+\left(\frac{-17}{23}+\frac{17}{23}\right)+\left(\frac{-5}{4}+\frac{-15}{4}+\frac{1}{4}\right)+\frac{80}{87}\)

\(F=\frac{15}{14}+0+\frac{-19}{4}+\frac{80}{87}\)

Answer 2

[VRCT_Búp Bê Zoke_PK Huỳnh Akj_]

\(\frac{15}{14}-\left(\frac{17}{23}-\frac{80}{87}+\frac{5}{4}\right)+\left(\frac{17}{23}-\frac{15}{4}+\frac{1}{4}\right)\)

\(=\frac{15}{14}-\frac{8561}{8004}+\left(-\frac{127}{46}\right)\)

\(=-2,759031199\)