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Sagot :

-x-6(-5-3x)=2(-2x+9)-5

-x - 6*-5 + 6*-3 = 2*-2x + 2*9 - 5

-x - -30 + -18 = -4x + 18 - 5

-x +30 - 18 = -4x + 18 -5

-x +12 = -4x + 13

-x = -4x + 1

3x = 1

x = 1/3

 

A Vérifié

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