Question

\(\frac{19}{13}\)+ \(\frac{45}{48}\):\(\frac{7}{16}\)-2

Answer 1

\(\frac{19}{13}+\frac{45}{48}:\frac{7}{16}-2\)

\(=\frac{19}{13}+\frac{45}{48}.\frac{16}{7}-2\)

\(=\frac{19}{13}+\frac{15}{7}-2\)

\(=\frac{328}{91}-2\)

\(=\frac{146}{91}\)

Answer 2

=\(\frac{146}{91}\)

Answer 3

\(\frac{19}{13}+\frac{45}{48}:\frac{7}{16}-2\)

\(\frac{499}{208}:\frac{7}{16}-2\)

\(\frac{499}{91}-2\)

\(\frac{317}{91}\)

Answer 4

146/91

Answer 5

  \(\frac{19}{13}+\frac{45}{48}:\frac{7}{16}-2\)

= \(\frac{19}{13}+\frac{45}{48}x\frac{16}{7}-2\)

= \(\frac{19}{13}+\frac{45}{3}x\frac{1}{7}-2\)

= \(\frac{19}{13}+\frac{45}{21}-2\)

= \(\frac{19}{13}+\frac{13}{7}-2\)

= \(\frac{19}{13}+\frac{13}{7}-\frac{2}{1}\)

= \(\frac{133}{91}+\frac{169}{91}-\frac{182}{91}\)

= \(\frac{302}{91}-\frac{182}{91}\)

= \(\frac{120}{91}\)

Answer 6

cho mình sửa lại thành 15/7, đáp số là 146/91