5/17-9/15-2/17+(-2)/3
=5/17-2/17-9/15+(-2)/3
=3/17-9/15+(-2)/3
=-36/85+(-2)/3
=-278/255
\(\frac{5}{17}-\frac{9}{15}-\frac{2}{17}+\frac{-2}{3}\)
\(=\left(\frac{5}{17}-\frac{2}{17}\right)-\left(\frac{9}{15}+\frac{2}{3}\right)\)
\(=\frac{3}{17}-\left(\frac{9}{15}+\frac{10}{15}\right)\)
\(=\frac{3}{17}-\frac{19}{15}\)
\(=-\frac{278}{255}\)
kq là
= [ 5/17-2/17] - [9/15+2/3]
=3/17- [9/15 + 10/15 ]
=-278/255