Question

[Quiinkenkk🍉]

 cứu tớ với ạ tớ ra kết quả kh chắc có đk nên tớ lên hỏi mong mng giúp đỡ

Answer 1

[Nguyễn Lê Phước Thịnh]

\(1\dfrac{1}{5}:\left\{\dfrac{5}{8}+\left[\dfrac{5}{3}-\left(-\dfrac{1}{4}\right)\right]\cdot\dfrac{9}{2^2}\right\}\)

\(=\dfrac{6}{5}:\left\{\dfrac{5}{8}+\left(\dfrac{5}{3}+\dfrac{1}{4}\right)\cdot\dfrac{9}{4}\right\}\)

\(=\dfrac{6}{5}:\left\{\dfrac{5}{8}+\dfrac{23}{12}\cdot\dfrac{9}{4}\right\}\)

\(=\dfrac{6}{5}:\left\{\dfrac{5}{8}+\dfrac{23\cdot3}{16}\right\}=\dfrac{6}{5}:\left(\dfrac{10}{16}+\dfrac{69}{16}\right)\)

\(=\dfrac{6}{5}\cdot\dfrac{16}{79}=\dfrac{96}{395}\)