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Nathe12
@Nathe12
April 2019
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Vous pouvez m'aidez pour l'exercice 51 merci d'avance
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maudmarine
Verified answer
Bonjour,
A = 3a + 5 - (2a + 7) + (8 - 5a)
A = 3a + 5 - 2a - 7 + 8 - 5a
A = 3a - 2a - 5a + 5 + 8 - 7
A = 3a - 7a + 13 - 7
A = - 4a + 6
B = - b + 4 + (3b - 2) - (8b - 5)
B = - b + 4 + 3b - 2 - 8b + 5
B = - b - 8b + 3b + 4 + 5 - 2
B = - 9b + 3b + 9 - 2
B = - 6b + 7
C = 6 - 5c + 3c - (4 - 6c) + 5 + (7 - 2c)
C = 6 - 5c + 3c - 4 + 6c + 5 + 7 - 2c
C = - 5c - 2c + 3c + 6c + 6 + 5 + 7 - 4
C = - 7c + 9c + 18 - 4
C = 2c + 14
D = d - 1 - (3d + 4) + (5 - 4d) - (7d + 5) + 5
D = d - 1 - 3d - 4 + 5 - 4d - 7d - 5 + 5
D = d - 3d - 4d - 7d - 1 - 4 - 5 + 5 + 5
D = d - 14d - 10 + 10
D = - 13d
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Thanks 1
Nathe12
merci
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Verified answer
Bonjour,A = 3a + 5 - (2a + 7) + (8 - 5a)
A = 3a + 5 - 2a - 7 + 8 - 5a
A = 3a - 2a - 5a + 5 + 8 - 7
A = 3a - 7a + 13 - 7
A = - 4a + 6
B = - b + 4 + (3b - 2) - (8b - 5)
B = - b + 4 + 3b - 2 - 8b + 5
B = - b - 8b + 3b + 4 + 5 - 2
B = - 9b + 3b + 9 - 2
B = - 6b + 7
C = 6 - 5c + 3c - (4 - 6c) + 5 + (7 - 2c)
C = 6 - 5c + 3c - 4 + 6c + 5 + 7 - 2c
C = - 5c - 2c + 3c + 6c + 6 + 5 + 7 - 4
C = - 7c + 9c + 18 - 4
C = 2c + 14
D = d - 1 - (3d + 4) + (5 - 4d) - (7d + 5) + 5
D = d - 1 - 3d - 4 + 5 - 4d - 7d - 5 + 5
D = d - 3d - 4d - 7d - 1 - 4 - 5 + 5 + 5
D = d - 14d - 10 + 10
D = - 13d