Question

[_Thỏ Kunny_]

d)\(\frac{-2}{17}\)+\(\frac{15}{23}\)\(\frac{-15}{17}\)+\(\frac{4}{19}\)+\(\frac{8}{23}\)

e) 1\(\frac{5}{13}\)+\(\frac{-3}{8}\)+\(\frac{8}{13}\)+\(\frac{-5}{8}\)

f) (19\(\frac{5}{8}\):\(\frac{7}{12}\)-13\(\frac{1}{4}\):\(\frac{7}{12}\)).\(\frac{4}{5}\)

g)\(\frac{-3}{7}\).\(\frac{5}{9}\)+\(\frac{4}{9}\).\(\frac{-3}{7}\)+2\(\frac{3}{7}\)

Answer 1

[Ngọc Mai_NBK]

e) 18/13-3/8+8/13-5/8

=26/13-8/8

=2-1

=1

Answer 2

[Ngọc Mai_NBK]

f) (157/8.(12/7)-53/4.(12/7)).4/5

=12/7(157/8-106/8).4/5

=306/35