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Sagot :

CARYS

A)  2(3x + 4) - 5(1 - 2x) = 7(2x - 3) + 12

6x + 8 - 5 + 10x = 14x - 21 + 12

6x + 10x - 14x = -21 + 12 - 8 + 5

2x = -12

x = -12/2

x = -6

 

voilà :)

 

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