600 = x X 5,20 - [ ( x X 2,50 ) + 300 ]600 = 5,20x - 2,50x - 3005,20x - 2,50x - 300 - 600 = 02,7x - 900 = 0x = 900/2,7x = 1000/3En espérant t'avoir aidé.
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600 = x X 5,20 - [ ( x X 2,50 ) + 300 ]
600 = 5,20x - 2,50x - 300
5,20x - 2,50x - 300 - 600 = 0
2,7x - 900 = 0
x = 900/2,7
x = 1000/3
En espérant t'avoir aidé.