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4eme7
@4eme7
May 2019
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Bonjour pouvez vous regardez si mon exo 1 de mon dm est bon svp et si c'est faux corriger !
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loulakar
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Bonjour,
A = -49/-15 x -10/21
A = -49/21 x 10/15
A = -7/3 x 2/3
A = -14/9
B = -17/52 : -34/-39
B = -17/52 x 39/34
B = -17/34 x 39/52
B = -1/2 x 3/4
B = -3/8
C = -4/9 - 7/12 + 11/4
C = -4/9 - 7/12 + 33/12
C = -4/9 + 26/12
C = -4/9 + 13/6
C = -8/18 + 39/18
C = 31/18
D = (8/15 - 7/5) x (-1/6 + 2/9)
D = (8/15 - 21/15) x (-3/18 + 4/18)
D = (-13/15) x 1/18
D = -13/270
E = -8/3 : -5/6 + 7/4
E = -8/3 x -6/5 + 7/4
E = 6/3 x 8/5 + 7/4
E = 2 x 8/5 + 7/4
E = 16/5 + 7/4
E = 64/20 + 35/20
E = 99/20
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Verified answer
Bonjour,A = -49/-15 x -10/21
A = -49/21 x 10/15
A = -7/3 x 2/3
A = -14/9
B = -17/52 : -34/-39
B = -17/52 x 39/34
B = -17/34 x 39/52
B = -1/2 x 3/4
B = -3/8
C = -4/9 - 7/12 + 11/4
C = -4/9 - 7/12 + 33/12
C = -4/9 + 26/12
C = -4/9 + 13/6
C = -8/18 + 39/18
C = 31/18
D = (8/15 - 7/5) x (-1/6 + 2/9)
D = (8/15 - 21/15) x (-3/18 + 4/18)
D = (-13/15) x 1/18
D = -13/270
E = -8/3 : -5/6 + 7/4
E = -8/3 x -6/5 + 7/4
E = 6/3 x 8/5 + 7/4
E = 2 x 8/5 + 7/4
E = 16/5 + 7/4
E = 64/20 + 35/20
E = 99/20