bonjour
2 x /4 + 1/3 = 4 /5
30 x /60 + 20/60 = 48/60
30 x = 48 - 20
30 x = 28
x = 28/30 = 14/15
- 3 x /7 - 2/5 = 1/3
- 45 x / 105 - 42 /105 = 35/105
- 45 x = 35 + 42
- 45 x = 77
x = - 77/45
- x /2 + 1/3 = 11/6
- 3 x /6 + 2 /6 = 11/6
- 3 x = 11 - 2
- 3 x = 9
x = - 3
- x + 1 = 2 x
- x - 2 x = - 1
- 3 x = - 1
x = 1/3
- 8 x - 3 = 4 x + 3
- 8 x - 4 x = 3 + 3
- 12 x = 6
x = - 1/2
vérifie que j'ai bien recopié car c'est minuscule
