Sagot :

Bonjour


calculer


3(2x - 4 ) = 5x - ( -3x + 7 )

6x - 12 = 5x + 3x - 7

6x - 12 = 8x - 7

-12 + 7 = 8x - 6x

-5 = 2x

x = -5/2

x = -2,5