Equations à deux inconnus

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•

Mathematics

•

8th Grade - University

•

Hard

Marie M.

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5 Slides • 0 Questions

Equations à deux inconnus

Par Marie M.

Imaginons :

x + 2y = 6
y - x = 2
QUE FAISONS NOUS ?

Donc...

Comme y est égal à x + 2, on va le remplacer dans l'équation
x + 2(x+2) = 6
Donc 3 x + 4 = 6
Donc 3x = 2
Donc x = 3 demis = 1.5
Et par conséquent, y = 3.5

Eh bien quoi ? C'était dur ?

Pour vous entrainer, voici un autre système :

x + 4 y = 12

y - x = 5

BONNE CHANCE A TOUS !!!

Donc...

Equations à deux inconnus

Par Marie M.

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