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Bonjour j’ai besoins d’aide sur cette exercice

Bonjour Jai Besoins Daide Sur Cette Exercice class=

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Réponse:

2x +1 = 3

2x +1 -1 = 3 -1

2x = 2

2x ÷2 = 2 ÷2

x = 1

-4x -2 = 6

-4x -2 +2 = 6 +2

-4x = 8

-4x ÷ (-4) = 8 ÷ (-4)

x = -2

3x -3 = 9

3x -3 +3 = 9 +3

3x = 12

3x ÷3 = 12 ÷3

x = 4

-x +9 = 10

-x +9 -9 = 10 -9

-x = 1

-x ÷ (-1) = 1 ÷ (-1)

x = -1