équation ax+b=0
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<=
=>
2x + 7 = 0
2x = –7
2x = 7
et donc
x = 7/2
x = –7/2
Vérification
3x – 7 = 0
3x = –7
3x = 7
et donc
x = 7/3
x = –7/3
Vérification
–3x + 5 = 0
–3x = – 5
–3x = 5
et donc
x = 5 + 3
x = 5/3
x = – 5/3
Vérification
–7x – 5 = 0
–7x = – 5
–7x = 5
et donc
x = 5 + 7
x = 5/7
x = –5/7
Vérification
5x + 4 = 7
5x = 7/4
5x = 7 – 4
5x = 7 + 4
et donc
x = 3/5
x = –3/5
Vérification
3x – 4 = 5
3x = 5 + 4
3x = 5 – 4
3x = –5/4
et donc
x = – 3
x = 3
x = 1/3
x = –5/12
Vérification
–5x + 4 = 7
–5x = 7/4
–5x = 7 – 4
–5x = 7 + 4
et donc
x = 3/5
x = –3/5
x = –11/5
Vérification
3x – 7 = – 10
3x = –3
3x = 17
3x = –17
et donc
x = 1
x = –17/3
x = –1
x = 17/3
x = 20
Vérification
–8x + 7 = – 10
–8x = –10/7
–8x = 10/7
–8x = –17
–8x = –3
et donc
x = –3/8
x = 17/8
x = 3/8
x = 20
Vérification
–8x – 7 = – 1
–8x = –1/7
–8x = 1/7
–8x = –8
–8x = 6
et donc
x = –3/4
x = 7/8
x = 1
x = –1
Vérification
5x + 4 = 14
x + 4 = 14/5
5x = 14 – 4
5x = 14 + 4
et donc
x = 14/5 - 4
x = 2
x = 18/5
Vérification
2x – 7 = 0
2x = –7
2x = 7
et donc
x = 7/2
x = –7/2
Vérification
–7x + 5 = 0
–7x = – 5
–7x = 5
et donc
x = 5 + 7
x = 5/7
x = – 5/7
Vérification
11x – 4 = 5
11x = 5 + 4
11x = 5 – 4
11x = –5/4
et donc
x = – 11
x = 9/11
x = 1/11
x = –5/44
Vérification
8 – 3x = 0
3x = –8
–3x = 8
–3x = –8
et donc
x = 8/3
x = 3/8
x = –3/8
x = –11
Vérification
5x + 4 = 1
x + 4 = 1/5
5x = 1 – 4
5x = 1 + 4
et donc
x = 1/5 – 4
x = –3/5
x = 1
Vérification
3x – 6 = – 10
3x = –16
3x = 16
3x = –4
et donc
x = 16/3
x = 16/3
x = –4/3
x = 4/3
Vérification
–5x – 7 = – 1
–5x = –1/7
–5x = 1/7
–5x = –8
–5x = 6
et donc
x = –3/4
x = 7/8
x = 6/5
x = –6/5
Vérification
7x + 4 = 1
x + 4 = 1/7
7x = 1 – 4
7x = 1 + 4
et donc
x = 1/7 – 4
x = –3/7
x = 5/7
Vérification
–7x + 5 = 1
–7x = – 4
–7x = 4
–7x = 1/5
–7x = –1/5
et donc
x = 4/7
x = –4/7
x = 1/5 - 7
x = 1/5 +7
Vérification
OK
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