Répondre :
A=2/13-5/13/(10/16)
=2/13-5/13*16/10
=2/13-5/13*8/5
=2/13-8/13
=-6/13
=2/13-5/13*16/10
=2/13-5/13*8/5
=2/13-8/13
=-6/13
[tex]A = \frac{2}{13} - \frac{5}{13} : \frac{10}{16} = \frac{2}{13} - \frac{5}{13} * \frac{16}{10} = \frac{2}{13} - \frac{80}{130} = - \frac{6}{13} <== Simplifier [/tex]