\(0,75.2019-\left(\dfrac{13}{11}-50\%\right):\dfrac{2}{11}\)
\(=\dfrac{3}{4}.2019-\left(\dfrac{13}{11}-50\%\right).\dfrac{11}{2}\)
\(=\dfrac{3}{4}.2019-\dfrac{13}{11}.\dfrac{11}{2}+\dfrac{1}{2}.\dfrac{11}{2}\)
\(=\dfrac{6057}{4}-\dfrac{13}{2}+\dfrac{11}{4}\)
\(=\dfrac{3021}{2}\)
P/s: Em có thể bấm vào biểu tượng \(\sum\) trên thanh công cụ để gõ phân số nhé!
Ta có: \(\dfrac{3}{4}\cdot2019-\left(\dfrac{13}{11}-\dfrac{1}{2}\right):\dfrac{2}{11}\)
\(=\dfrac{6057}{4}-\dfrac{26-11}{22}:\dfrac{2}{11}\)
\(=\dfrac{6057}{4}-\dfrac{5}{22}\cdot\dfrac{11}{2}\)
\(=\dfrac{6057}{4}-\dfrac{5}{4}=\dfrac{6052}{4}=1513\)
