- 5,2x+(7+4x)=2(3x-8,6) Meri de jeter un coup d'oeil

Bonjour,
-5.2x+(7+4x)=2(3x-8.6)
-5.2x+7+4x=6x-17.2
-1.2x+7=6x-17.2
6x+1.2x=7+17.2
7.2x=24.2
x=24.2/7.2
x=242/72
x=121/36
 bonne chance ! 

bonjour

- 5.2 x + 7 + 4 x = 6 x - 17.2
- 5.2 x + 4 x - 6 x = - 17.2 - 7
- 7.2 x = - 24.2
x = 242/72 ou 121/36