bonjour
x
2 x
2 x - 9
5 ( 2 x - 9)
= 10 x - 45
on choisit - 2 , on trouve 10 * - 2 - 45 = - 20 - 45 = - 65
- 2
- 2 *2 = - 4
- 4 - 9 = - 13
- 13 x 5 = - 65
killian
x = 10 x - 45
x - 10 x = - 45
- 9 x = - 45
x = 5
il a pris 5
5
5 * 2 = 10
10 - 9 = 1
1 x 4 = 5