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Exercice 1 : Résoudre ces équations.
X - 5 = 3
X + 8 = - 12
• 4x = 36
• X: 8 = 15
5x – 3 = 12
4 + 5x = 8
3x + 1 = 19
-3 + 5x = 12 + 2x
7 - x = 3x - 3
x2 = 16​

Exercice 1 Résoudre Ces Équations X 5 3 X 8 12 4x 36 X 8 15 5x 3 12 4 5x 8 3x 1 19 3 5x 12 2x 7 X 3x 3 X2 16 class=

Sagot :

SGF

x-5=3 _ x = 5 + 3 = 8

x+8= -12 _ x = -12-8= -20

4x = 36 _ x = 36/4 = 9

x/8 = 15 _ x = 15*8 = 120

5x-3 = 12 _ 5x = 15 _ x = 3

4 + 5x = 8 _ 5x = 4 _ x = 4/5

-3x + 1 = 19 _ -3x = 18 _ x = -6

-3 + 5x = 12 + 2x _ 5x-2x = 12 + 3 _ 3x = 15 _ x=5

7-x = 3x - 3 _ 7+3 = 3x + x _ 10 = 4x _ x = 10/4

x^2 = 16, x = -4 ou 4

Voilà, n'hésite pas si t'as des questions