Bonsoir j'aimerais de l'aide sil vous plaît. 5x+7 = 9 +3= 7 -4x+8 = -2 5 15x = SC = > -X+3 = 5 2 x+5=8 +5=8 7 5x +8 = 14 4 -×+3=5 2/7×+5= -8
Mathématiques
jasmin40
Question
Bonsoir j'aimerais de l'aide sil vous plaît.
5x+7 = 9
+3= 7
-4x+8 = -2
5
15x =
SC =
>
-X+3 = 5
2
x+5=8
+5=8
7
5x
+8 = 14
4
-×+3=5
2/7×+5= -8
5x+7 = 9
+3= 7
-4x+8 = -2
5
15x =
SC =
>
-X+3 = 5
2
x+5=8
+5=8
7
5x
+8 = 14
4
-×+3=5
2/7×+5= -8
1 Réponse
-
1. Réponse Vins
bonjour
5x+7 = 9
5 x = 9 - 7
5 x = 2
x = 2/5
-4x+8 = -2
- 4 x = - 2 - 8
- 4 x = - 10
x = 10/4 = 5 /2
-X+3 = 5
- x = 5 - 3
- x = 2
x = - 2
x+5=8
x = 8 - 5
x = 3
5x + 8 = 14
5 x = 14 - 8
5 x = 6
x = 6 /5
2/7×+5= -8
2 x /7 = - 56 /7 - 35/7
2 x = - 91
x = - 91/2