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Sagot :

NEBULEUSEDUCRABE

Bonjour,

a. 2(x + 3) = 7x + 1

2x + 6 = 7x + 1

2x - 7x = 1 - 6

-5x = -5

x = [tex]\frac{-5}{-5}[/tex]

x= 1

b. 2x - 5 = 3(x + 5) - 5

2x - 5 = 3x + 15 - 5

2x - 5 = 3x + 10

2x - 3x = 10 + 5

-x = 15

x = -15

En espérant t'avoir aidé :)

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