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Sagot :
BONJOUR
a) 6 x = 3 - 2 + 4
6 x = 5
x = 5/6
b) 4 x = 3
x = 3/4
c) 8 x = 13
x = 13/8
d) - x - 2 x = 6 - 4
- 3 x = 2
x = - 2/3
e) - 5 x + 7 x - 3 x = - 4 + 3
- x = - 1
x = 1
F) 6 x - 3 x = 2 - 2 + 4
3 x = 4
x = 4/3
G) 9 x = - 12
x = - 12/9 = - 4/3
je pense que tu peux maintenant faire la suite
a) 6 x = 3 - 2 + 4
6 x = 5
x = 5/6
b) 4 x = 3
x = 3/4
c) 8 x = 13
x = 13/8
d) - x - 2 x = 6 - 4
- 3 x = 2
x = - 2/3
e) - 5 x + 7 x - 3 x = - 4 + 3
- x = - 1
x = 1
F) 6 x - 3 x = 2 - 2 + 4
3 x = 4
x = 4/3
G) 9 x = - 12
x = - 12/9 = - 4/3
je pense que tu peux maintenant faire la suite
a) 2 + 6x - 4 = 3
6x = 3 - 2 + 4
6x = 5
x = 5/6
b) - 5x - 3 + 7x = 0
2x = 3
x = 3/2
x = 1,5
c) - 12 + 8x = 1
8x = 1 + 12
8x = 13
x = 13/8
d) - x + 4 = 6 + 2x
- x - 2x = 6 - 4
- 3x = 2
x = - 2/3
e) - 5x - 3 + 7x = 3x - 4
- 5x + 7x - 3x = - 4 + 3
- x = - 1
x = 1
f) 2 + 6x - 4 = 3x + 2
6x - 3x = 2 - 2 + 4
3x = 4
x = 4/3
g) 9x + 12 = 0
9x = - 12
x = - 12/9
x = - 4/3
h) 3x - 9 = 2
3x = 2 + 9
3x = 11
x = 11/3
i) - 4 - 3x = 6 + 5x
- 3x - 5x = 6 + 4
- 8x = 10
x = - 10/8
x = - 1,25
j) x - 1 = - 8x + 1
x + 8x = 1 + 1
9x = 2
x = 2/9
k) 3 (4 + x) = 0
3 * 4 + 3 * x = 0
12 + 3x = 0
3x = - 12
x = - 12/3
x = - 4
6x = 3 - 2 + 4
6x = 5
x = 5/6
b) - 5x - 3 + 7x = 0
2x = 3
x = 3/2
x = 1,5
c) - 12 + 8x = 1
8x = 1 + 12
8x = 13
x = 13/8
d) - x + 4 = 6 + 2x
- x - 2x = 6 - 4
- 3x = 2
x = - 2/3
e) - 5x - 3 + 7x = 3x - 4
- 5x + 7x - 3x = - 4 + 3
- x = - 1
x = 1
f) 2 + 6x - 4 = 3x + 2
6x - 3x = 2 - 2 + 4
3x = 4
x = 4/3
g) 9x + 12 = 0
9x = - 12
x = - 12/9
x = - 4/3
h) 3x - 9 = 2
3x = 2 + 9
3x = 11
x = 11/3
i) - 4 - 3x = 6 + 5x
- 3x - 5x = 6 + 4
- 8x = 10
x = - 10/8
x = - 1,25
j) x - 1 = - 8x + 1
x + 8x = 1 + 1
9x = 2
x = 2/9
k) 3 (4 + x) = 0
3 * 4 + 3 * x = 0
12 + 3x = 0
3x = - 12
x = - 12/3
x = - 4
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