Tính;
a) dfrac{-7}{9} . 2dfrac{3}{4} b) dfrac{2}{3} + dfrac{1}{3} . dfrac{-2}{5}
c) dfrac{2}{3} - 4 (dfrac{1}{2}+dfrac{3}{4}) d) (dfrac{1}{-3} + dfrac{5}{6}) .11-7
e)dfrac{3}{4} . 15dfrac{1}{3} - dfrac{3}{4} . 43dfrac{1}{3}
Đọc tiếp
Tính;
a) \(\dfrac{-7}{9}\) . 2\(\dfrac{3}{4}\) b) \(\dfrac{2}{3}\) + \(\dfrac{1}{3}\) . \(\dfrac{-2}{5}\)
c) \(\dfrac{2}{3}\) - 4 (\(\dfrac{1}{2}\)+\(\dfrac{3}{4}\)) d) (\(\dfrac{1}{-3}\) + \(\dfrac{5}{6}\)) .11-7
e)\(\dfrac{3}{4}\) . 15\(\dfrac{1}{3}\) - \(\dfrac{3}{4}\) . 43\(\dfrac{1}{3}\)
