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Mickael30300
@Mickael30300
April 2019
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Bonjour, quelqu'un saurait résoudre ce système. Merci.
Résoudre un système de 2 équations à 2 inconnus.
2x - 3y = 0
x - 4y - 7 = 0
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nathalienouts
2x - 3y = 0
x - 4y - 7 = 0
2x-3y = 0
x-4y = 7
2x-3y = 0
-2x+8y = -14 on multiplie celle-ci par -2
on addtionne
2x-3y-2x+8y = -14
5y = -14
y = -14/5
2x +3*14/5 = 0
2x = -42/5
x = -42/(2*5)
x = -21/5
1 votes
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x - 4y - 7 = 0
2x-3y = 0
x-4y = 7
2x-3y = 0
-2x+8y = -14 on multiplie celle-ci par -2
on addtionne
2x-3y-2x+8y = -14
5y = -14
y = -14/5
2x +3*14/5 = 0
2x = -42/5
x = -42/(2*5)
x = -21/5