Réponse:
a) -3x+4=4
-3x= 0
x = 0
b) 2x -14 =0
2x= 14
x = 14/2
x= 7
c) 9x-2=7x+5
9x= 7x +7
2x=7
x=7/2
x=3.5
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Réponse:
a) -3x+4=4
-3x= 0
x = 0
b) 2x -14 =0
2x= 14
x = 14/2
x= 7
c) 9x-2=7x+5
9x= 7x +7
2x=7
x=7/2
x=3.5