Question

Tính:

\(\left[18\dfrac{1}{6}-\left(0,06:7\dfrac{1}{2}+3\dfrac{2}{8}.0,38\right)\right]:\left(19-2\dfrac{2}{3}.4\dfrac{3}{4}\right)\)

Answer 1

Tính :

\(\left[18\dfrac{1}{6}-\left(0,06:7\dfrac{1}{2}+3\dfrac{2}{8}.0,38\right)\right]:\left(19-2\dfrac{2}{3}.4\dfrac{3}{4}\right)\)

\(=\left[\dfrac{109}{6}-\left(0,06:\dfrac{15}{2}+\dfrac{26}{8}.0,38\right)\right]:\left(19-\dfrac{8}{3}.\dfrac{19}{4}\right)\)

\(=\left[\dfrac{109}{6}-\left(\dfrac{1}{125}+\dfrac{247}{200}\right)\right]:\left(19-\dfrac{38}{3}\right)\)

\(=\left[\dfrac{109}{6}-\dfrac{1243}{1000}\right]:\left(\dfrac{19}{3}\right)\)

Đến đây thì tự tính ra và kết luận nhé !