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Sagot :

FICANAS06

2*x+2*(2x+5)=31

2x + 4x + 10 = 31

6x = 31 - 10

6x = 21

x = 21/6 =(3*7) / (3*2) = 7/2

INEQUATION

Bonsoir

Résoudre l'équation:

2*x+2*(2x+5)=31

2x+4x+10= 31

6x = 31-10

6x= 21

x = 21/6    simplifier par 3

x= 7/2

S= { 7/2 }

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