Question

Thực hiện phép tính : \(20\frac{15}{16}.16\frac{8}{9}-20\frac{15}{16}.12\frac{8}{9}\)

Answer 1

\(20\frac{15}{16}.16\frac{8}{9}-20\frac{15}{16}.12\frac{8}{9}\)

\(=20\frac{15}{16}.\left(16\frac{8}{9}-12\frac{8}{9}\right)\)

\(=20\frac{15}{16}.4\)

\(=83\frac{3}{4}\)