Question

\(P=\dfrac{2-\dfrac{1}{3}+\dfrac{1}{4}}{2+\dfrac{1}{6}-\dfrac{1}{4}}\)

\(Q=\dfrac{3+\dfrac{1}{6}-\dfrac{2}{5}}{5-\dfrac{1}{6}+\dfrac{7}{10}}\)

cái này chắc các thầy cô hoặc các CVT làm được thôi,nó khó lắm

Answer 1

tính nhanh à

Answer 2

\(Q=\dfrac{3+\dfrac{1}{6}-\dfrac{2}{5}}{5-\dfrac{1}{6}+\dfrac{7}{10}}\)

\(=\dfrac{\dfrac{83}{30}}{5-\dfrac{1}{6}+\dfrac{7}{10}}\)

\(=\dfrac{83}{30\left(5-\dfrac{1}{6}+\dfrac{7}{10}\right)=\dfrac{83}{166}=\dfrac{1}{2}}\)

Answer 3

\(P=\dfrac{2-\dfrac{1}{3}+\dfrac{1}{4}}{2+\dfrac{1}{6}-\dfrac{1}{4}}\)

\(=\dfrac{\dfrac{23}{12}}{2+\dfrac{1}{6}-\dfrac{1}{4}}\)

\(=\dfrac{23}{12\left(2+\dfrac{1}{6}-\dfrac{1}{4}\right)}=\dfrac{23}{12.\dfrac{23}{12}}=\dfrac{23}{23}=1\)