Répondre :
A= (8+10:2)*[5* 8 + 20: ( [tex] \frac{3}{5} + \frac{7}{5} [/tex] )+9 ]
=(8+5)[40+20:([tex] \frac{10}{5} [/tex])+9]
=13*(40+20:2+9)
=13*(40+10+9)
=13*59
=767
=(8+5)[40+20:([tex] \frac{10}{5} [/tex])+9]
=13*(40+20:2+9)
=13*(40+10+9)
=13*59
=767