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Author Topic:   Cerere tema Matematica  (Read 1354 times)

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Offline xCristi™

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Cerere tema Matematica
« on: 11 November 2014, 08:54:11 »
Nume:Cristi.xD
Tip (eseu, lectie, etc.):Operatii cu necunoscute.
Materie:Mate.
Cantitatea de 1670 paini a fost vanduta la un magazin astfel:in prima zi cu 115 paini mai putin decat a doua zi,iar a treia cu 155 paini mai putine decat
in prima zi.
Cate paini s au vandut in fiecare din cele trei zile?
« Last Edit: 01 June 2015, 16:37:25 by ×X×_vasya_×X× »
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Offline Bogdan ✖️

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Re: Tema matematica
« Reply #1 on: 11 November 2014, 09:08:46 »
I = X-115
II = X
III = x-115-155

Iar acum facem ecuatia :

x-115+x+x-115=1670
3x = 1670+115+115+155
3x = 1670 + 185
3x = 2055 => x = 2055:3 => x=685
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Când vezi o afacere de succes înseamnă că cineva a luat o decizie curajoasă.

Offline xCristi™

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Re: Tema matematica
« Reply #2 on: 11 November 2014, 09:15:35 »
Ms eu uitasem cum se scrie ecuatia , adica cum il bag pe x in ecuatie..
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