Thực hiện phép tính:
a) \(\frac{2}{5}\)+\(\frac{1}{2}\)-\(\frac{1}{3}\)=
b)\(\frac{2}{3}\)-\(\frac{1}{2}\)+\(\frac{1}{4}\)=
c)\(\frac{4}{5}\)-\(\frac{1}{2}\)+\(\frac{3}{4}\)=
Thực hiện phép tính:
a) \(\frac{2}{1}\)-\(\frac{1}{2}\)+\(\frac{1}{4}\)=
b)\(\frac{3}{1}\)-\(\frac{2}{3}\)+\(\frac{1}{2}\)=
c)\(\frac{4}{5}\)+\(\frac{1}{4}\)-\(\frac{3}{10}\)=