Résoudre l équation: 5(x-3)-3x +7=9 Merciii

Bonjour,

5(x - 3) - 3x + 7 = 9

5x -15 -3x + 7 = 9

2x -8 = 9

2x = 9 + 8

2x = 17

x = 17/2

x = 8,5

bonjour

5 ( x - 3)  - 3 x + 7 = 9

5 x - 15 - 3 x + 7 = 9

5 x - 3 x = 9 + 15 - 7

2 x = 17

x = 17/2 = 8.5