Aide en math SVP : résoudre chaque équation :
A. 6x + 1 = 2x + 6
B. 5x - 8 = 2 + 3x
C. 2 - 5x = 1+ 6x
D. -4 + 8x = 3x - 9
E. 3( x +1 ) = x + 6
F. x + 35 = 2( x + 10 )
G. -2(3x + 5) = 7 + x
H. 2( 7-2x ) = -3( x-7 )

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Meilleure réponse !
2013-12-15T23:36:30+01:00
A/  6x+1=2x+6                 B/  5x-8=2+3x                    C/    2-5x = 1+6x
      6x-2x=6-1                         2x=10                                     1=11x
       4x=5                                  x=10/2                                     x=1/11
       x=5/4                                 x=5
 
D/  5x=-5                          E/  3x+3 = x+6               F/  x+35 = 2x+20
       x=-5/5                             2x = 3                                   x=15  
       x=-1                                 x=3/2

G/  -6x-10 = 7+x              H/  14-4x = -3x+21
       -17 = 7x                             x=-7
         x=-17/7