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Sagot :

ELO15

Bonjour

2(3x - 1) = 15 - ( - 2x - 4)

⇔ 6x - 2 = 15 + 2x + 4

⇔ 6x - 2 = 19 + 2x

⇔ 6x - 2x = 19 + 2

⇔ 4x = 21

⇔ x = 21/4

S = [ 21/4 ]

Réponse :

Bonjour,

[tex]2(3x-1)=15-(-2x-4)[/tex]

[tex]2*3x + 2*-1 = 15-(-2x-4)[/tex]

[tex]6x - 2 = 2x + 19[/tex]

[tex]6x - 2+ 2 = 2x + 19 +2[/tex]

[tex]6x = 2x + 21[/tex]

[tex]6x - 2x = 2x + 21 - 2x[/tex]

[tex]4x = 21[/tex]

[tex]x = \frac{21}{4}[/tex]

Voila bonne journée..

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