1.
a) \(\dfrac{1+\dfrac{1}{4}}{1-\dfrac{1}{4}}\div\dfrac{1+\dfrac{1}{8}}{1-\dfrac{1}{8}}\)
b) \(0,25+37\%-2^1_4\)
c) \([(\begin{matrix}27\\25\end{matrix}-\dfrac{4}{50})\div\dfrac{4}{7}]\div[\dfrac{119}{36}\div(\dfrac{17}{36}\times\dfrac{1}{12})]\)
MỌI NGƯỜI GIÚP MÌNH VS NHÉ. ^^