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Reem
@Reem
January 2021
1
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Salut à tous
Ex. 1 svp
Merci d'avance
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Annflr
Elle a 1550 kr
x billets de 100 kr
2 billets de 200 de moins que des billets de 100 : x - 2
4 billets de 50 de plus que les billets de 100 : x + 4
Tu as donc : (x+4) * 50 + x * 100 + (x-2) * 200 = 1550
50x + 200 + 100x + 200x - 400 = 1550
50x + 100x + 200x = 1550 - 200 + 400
350x = 1750
x = 1750/350
x = 5
Elle a donc 5 billets de 100kr, (5+4)=9 billets de 50kr et (5-2) = 3 billets de 200kr
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Lista de comentários
x billets de 100 kr
2 billets de 200 de moins que des billets de 100 : x - 2
4 billets de 50 de plus que les billets de 100 : x + 4
Tu as donc : (x+4) * 50 + x * 100 + (x-2) * 200 = 1550
50x + 200 + 100x + 200x - 400 = 1550
50x + 100x + 200x = 1550 - 200 + 400
350x = 1750
x = 1750/350
x = 5
Elle a donc 5 billets de 100kr, (5+4)=9 billets de 50kr et (5-2) = 3 billets de 200kr