Question

22 x 13 x 17 / 55 x 26 x 51

Answer 1

\(\frac{22\cdot13\cdot17}{55\cdot26\cdot51}\)

\(=\frac{22\cdot13\cdot17}{55\cdot13\cdot2\cdot3\cdot17}\)

\(=\frac{11\cdot2}{55\cdot2\cdot3}\)

\(=\frac{11}{55\cdot3}=\frac{11}{165}\)

Answer 2

\(\frac{22.13.17}{55.26.51}\) = \(\frac{2.11.13.17}{11.5.13.2.17.3}\) = \(\frac{1}{15}\) 

. là dấu nhân nhé

Answer 3

22 x 13 x 17

55 x 26 x 51

=      11 x 2 x 13 x 17

   11 x 5 x 13 x 2 x 17 x 3

= 1

   15