Dạng : Tính nhanh [1]
a. \(6\frac{4}{5}\) - [\(1\frac{2}{3}\)+ \(3\frac{4}{5}\) ]
b. \(6\frac{5}{7}\) - [ \(1\frac{3}{4}\) + \(2\frac{5}{7}\)]
c. \(7\frac{5}{9}\) - [\(2\frac{3}{4}\)+ \(3\frac{5}{9}\)]
d. \(7\frac{5}{11}\) - [ \(2\frac{3}{7}\) + \(3\frac{5}{11}\)]
Mik dốt quạ :vv