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Adele27
@Adele27
April 2019
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Exercice 1 s'il vous plaît
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maudmarine
Verified answer
A)
3x - 9 = 0
3x = 9
x = 9/3
x = 3
B)
- 1/3x = 2/9
- 3/9x = 2/9
- 3x = 2
x = - 2/3
C)
- 2 (2x - 5) = 3 - (5 - 4x)
- 4x + 10 = 3 - 5 + 4x
- 4x - 4x = 3 - 5 - 10
- 8x = - 12
x = 12/8
x = 1,5
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Verified answer
A)3x - 9 = 0
3x = 9
x = 9/3
x = 3
B)
- 1/3x = 2/9
- 3/9x = 2/9
- 3x = 2
x = - 2/3
C)
- 2 (2x - 5) = 3 - (5 - 4x)
- 4x + 10 = 3 - 5 + 4x
- 4x - 4x = 3 - 5 - 10
- 8x = - 12
x = 12/8
x = 1,5