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Sagot :

Bonsoir,

2)

2(2x -3y) = 8

2x-3y = 8/2

2x-3y = 4

2x = 4-3y

4-3y -3y = 4

4-6y = 4

-6y  = 4-4 =0

=> y =0  

4x-0 = 8

4x= 8

x= 8/4 = 2

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