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Sagot :

x + x * 5/3 = 1000

x + 5x/3 = 1000

3x/3 + 5x/3 = 1000

8x/3 = 1000

8x = 3*1000

8x = 3000

x = 3000 / 8

x = 375

Réponse :

x+x * 5/3 = 1000

5/3 * 3/5x + x*5/3 =1000

5/3 (3/5x + 5/5x ) =1000

3/8x = 1000

Après tu calcule sachant que

x = 1000*3/8

Voilà

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