Résoudre les équations. a) 2x + 3 = 5 b) -3 + 5x = 12 c) 1 - 2x = 1 d) -3x - 5 = -8
Mathématiques
anais241299
Question
Résoudre les équations.
a) 2x + 3 = 5
b) -3 + 5x = 12
c) 1 - 2x = 1
d) -3x - 5 = -8
a) 2x + 3 = 5
b) -3 + 5x = 12
c) 1 - 2x = 1
d) -3x - 5 = -8
2 Réponse
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1. Réponse sousou5525525
a) 2x + 3 = 5
2x = 2
x = 1
b) -3 + 5x = 12
5x = 15
x=3
c) 1 - 2x = 1
-2x = 0
x = 0
d) -3x - 5 = -8
-3x = -3
x = 1 -
2. Réponse mounia7519
a) 2x + 3 = 5
2x = 5- 3
2x = 2
2 2
x= 2 = 1
2
b)-3 + 5x = 12
5x = 12 +3
5x = 15
5 5
x = 15 = 3
5
c) 1 - 2x = 1
-2x = 1-1
x = 0
d)-3x - 5 = -8
-3x = - 8 + 5
- 3x = -3
3 3
x= 3 = 1
3
Au plaisir de t'avoir aidé