qcmdemath.net
equation a
x
+b=0
Afficher toutes les questions
2
x
+ 7 = 0
2
x
= -7
2
x
= 7
et donc
x
= 7/2
x
= -7/2
Vérification
3
x
- 7 = 0
3
x
= -7
3
x
= 7
et donc
x
= 7/3
x
= -7/3
Vérification
-3
x
+ 5 = 0
-3
x
= - 5
-3
x
= 5
et donc
x
= 5 + 3
x
= 5/3
x
= - 5/3
Vérification
-7
x
- 5 = 0
-7
x
= - 5
-7
x
= 5
et donc
x
= 5 + 7
x
= 5/7
x
= -5/7
Vérification
5
x
+ 4 = 7
5
x
= 7/4
5
x
= 7 - 4
5
x
= 7 + 4
et donc
x
= 3/5
x
= -3/5
Vérification
3
x
- 4 = 5
3
x
= 5 + 4
3
x
= 5 - 4
3
x
= -5/4
et donc
x
= - 3
x
= 3
x
= 1/3
x
= -5/12
Vérification
-5
x
+ 4 = 7
-5
x
= 7/4
-5
x
= 7 - 4
-5
x
= 7 + 4
et donc
x
= 3/5
x
= -3/5
x
= -11/5
Vérification
3
x
- 7 = - 10
3
x
= -3
3
x
= 17
3
x
= -17
et donc
x
= 1
x
= -17/3
x
= -1
x
= 17/3
x
= 20
Vérification
-8
x
+ 7 = - 10
-8
x
= -10/7
-8
x
= 10/7
-8
x
= -17
-8
x
= -3
et donc
x
= -3/8
x
= 17/8
x
= 3/8
x
= 20
Vérification
-8
x
- 7 = - 1
-8
x
= -1/7
-8
x
= 1/7
-8
x
= -8
-8
x
= 6
et donc
x
= -3/4
x
= 7/8
x
= 1
x
= -1
Vérification
5
x
+ 4 = 14
x
+ 4 = 14/5
5
x
= 14 - 4
5
x
= 14 + 4
et donc
x
= 14/5 - 4
x
= 2
x
= 18/5
Vérification
2
x
- 7 = 0
2
x
= -7
2
x
= 7
et donc
x
= 7/2
x
= -7/2
Vérification
-7
x
+ 5 = 0
-7
x
= - 5
-7
x
= 5
et donc
x
= 5 + 7
x
= 5/7
x
= - 5/7
Vérification
11
x
- 4 = 5
11
x
= 5 + 4
11
x
= 5 - 4
11
x
= -5/4
et donc
x
= - 11
x
= 9/11
x
= 1/11
x
= -5/44
Vérification
8 - 3
x
= 0
3
x
= -8
-3
x
= 8
-3
x
= -8
et donc
x
= 8/3
x
= 3/8
x
= -3/8
x
= -11
Vérification
5
x
+ 4 = 1
x
+ 4 = 1/5
5
x
= 1 - 4
5
x
= 1 + 4
et donc
x
= 1/5 - 4
x
= -3/5
x
= 1
Vérification
3
x
- 6 = - 10
3
x
= -16
3
x
= 16
3
x
= -4
et donc
x
= -16/3
x
= 16/3
x
= -4/3
x
= 4/3
Vérification
-5
x
- 7 = - 1
-5
x
= -1/7
-5
x
= 1/7
-5
x
= -8
-5
x
= 6
et donc
x
= -3/4
x
= 7/8
x
= 6/5
x
= -6/5
Vérification
7
x
+ 4 = 1
x
+ 4 = 1/7
7
x
= 1 - 4
7
x
= 1 + 4
et donc
x
= 1/7 - 4
x
= -3/7
x
= 5/7
Vérification
-7
x
+ 5 = 1
-7
x
= - 4
-7
x
= 4
-7
x
= 1/5
-7
x
= -1/5
et donc
x
= 4/7
x
= -4/7
x
= 1/5 - 7
x
= 1/5 +7
Vérification
OK
qcmdemath.net