Pouvez vous m'aider svp 2(3x-4)=-7x+9 (4x-3)-8=5x-(2x-3)
Mathématiques
payko67
Question
Pouvez vous m'aider svp
2(3x-4)=-7x+9
(4x-3)-8=5x-(2x-3)
2(3x-4)=-7x+9
(4x-3)-8=5x-(2x-3)
2 Réponse
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1. Réponse maudmarine
Bonjour,
2(3x-4)=-7x+9
6x - 8 = - 7x + 9
6x + 7x = 9 + 8
13x = 17
x = 17/13
(4x-3)-8=5x-(2x-3)
4x - 3 - 8 = 5x - 2x + 3
4x - 5x + 2x = 3 + 3 + 8
x = 14.
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2. Réponse ficanas06
2(3x-4)=-7x+9
6x - 8 = -7x+9
6x+ 7x = 9+8
13x = 17
x =17/13
(4x-3)-8=5x-(2x-3)
4x - 3 - 8 = 5x - 2x + 3
4x - 11 = 3x + 3
4x - 3x = 3 + 11
x = 14