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Sagot :

Réponse :

a) 2006x + 7 = 1

2006x = -6

x= [tex]\frac{-6}{2006}[/tex]

b) 7x - 2006 = 1

7x = 2007

x = [tex]\frac{2007 }{7}[/tex]

c) (7-2006)x + 2006 + 7 = 2x1

-1999x + 2006 + 7 = 2

-1999x = -2011

x= [tex]\frac{-2011}{-1999}[/tex]

1ere question : Faux

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