Répondre :
A = 15x + (20t - 9x + 8t)
A = 15x + 20t - 9x + 8t
A = 15x - 9x + 20t + 8t
A = 6x + 28t
Bonjour;
A = 15x + ( 20t - 9x - 8t )
= 15x +20t -9x -8t
= 6x +12t
A = 15x + (20t - 9x + 8t)
A = 15x + 20t - 9x + 8t
A = 15x - 9x + 20t + 8t
A = 6x + 28t
Bonjour;
A = 15x + ( 20t - 9x - 8t )
= 15x +20t -9x -8t
= 6x +12t