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Sagot :
[tex]2x + 5 = - x + ( - 1)[/tex]
[tex]2x + 5 = - x - 1[/tex]
Add both sides x
[tex]2x + 5 + x = - x - 1 + x[/tex]
[tex]3x + 5 = - 1[/tex]
Subtract both sides 5
[tex]3x + 5 - 5 = - 1 - 5[/tex]
[tex]3x = - 6[/tex]
Divide both sides by 3
[tex] \frac{3x}{3} = \frac{ - 6}{3} \\ [/tex]
[tex]x = - 2[/tex]
______________________________
As u can see the first step is to :
Add one positive x-tile to both sides
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