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Sagot :
A = 5/-24 + -1/8
A = 5/-24 + - 1 x 3 / 8 x 3
A = - 5/24 - 3/24
A = - 8/24
A = 8 x - 1 / 8 x 3
A = - 1/3
B = 7/20 - 3/8
B = 7 x 2 / 20 x 2 - 3 x 5 / 8 x 5
B = 14/40 - 15/40
B = - 1/40
C = 18/40 x 25/-27
C = 18/40 x - 25/27
C = - 450/1080
C = 90 x - 5 / 90 x 12
C = - 5/12
D = - 32/54 x 18 - 22
D = - 1728/54 - 22
D = - 1728/54 - 22 x 54 / 1 x 54
D = - 1728/54 -1188/54
D = - 540/54
D = 54 x -10 / 54 x 1
D = - 10/1
D = - 10
A = 5/7 - 14/25 x 15/49
A = 5/7 - 210/1225
A = 5 x 175 / 7 x 175 - 210/1225
A = 875/1225 - 210/1225
A = 665/1225
A = 35 x 19 / 35 x 35
A = 19/35
B = 1/4 + 3/4 : (1 + 1/8)
B = 1/4 + 3/4 : (1 x 8 / 1 x 1 + 1/8)
B = 1/4 + 3/4 : (8/8 + 1/8)
B = 1/4 + 3/4 : 9/8
B = 1/4 + 3/4 x 8/9
B = 1/4 + 24/36
B = 1 x 9 / 4 x 9 + 24/36
B = 9/36 + 24/36
B = 33/36
B = 3 x 11 / 3 x 12
B = 11/12
C = 2/3 x 5/4 - 5/3 x 7/30
C = 10/12 - 35/90
C = 10 x 90 / 12 x 90 - 35 x 12 / 90 x 12
C = 900/1080 - 420/1080
C = 480/1080
C = 120 x 4 / 120 x 9
C = 4/9
A = 5/-24 + - 1 x 3 / 8 x 3
A = - 5/24 - 3/24
A = - 8/24
A = 8 x - 1 / 8 x 3
A = - 1/3
B = 7/20 - 3/8
B = 7 x 2 / 20 x 2 - 3 x 5 / 8 x 5
B = 14/40 - 15/40
B = - 1/40
C = 18/40 x 25/-27
C = 18/40 x - 25/27
C = - 450/1080
C = 90 x - 5 / 90 x 12
C = - 5/12
D = - 32/54 x 18 - 22
D = - 1728/54 - 22
D = - 1728/54 - 22 x 54 / 1 x 54
D = - 1728/54 -1188/54
D = - 540/54
D = 54 x -10 / 54 x 1
D = - 10/1
D = - 10
A = 5/7 - 14/25 x 15/49
A = 5/7 - 210/1225
A = 5 x 175 / 7 x 175 - 210/1225
A = 875/1225 - 210/1225
A = 665/1225
A = 35 x 19 / 35 x 35
A = 19/35
B = 1/4 + 3/4 : (1 + 1/8)
B = 1/4 + 3/4 : (1 x 8 / 1 x 1 + 1/8)
B = 1/4 + 3/4 : (8/8 + 1/8)
B = 1/4 + 3/4 : 9/8
B = 1/4 + 3/4 x 8/9
B = 1/4 + 24/36
B = 1 x 9 / 4 x 9 + 24/36
B = 9/36 + 24/36
B = 33/36
B = 3 x 11 / 3 x 12
B = 11/12
C = 2/3 x 5/4 - 5/3 x 7/30
C = 10/12 - 35/90
C = 10 x 90 / 12 x 90 - 35 x 12 / 90 x 12
C = 900/1080 - 420/1080
C = 480/1080
C = 120 x 4 / 120 x 9
C = 4/9
Bonjour
A = 5/-24 + -1/8
A = -5/24 - 1/8
A = -5/24 - 3/24
A = -8/24
A = -1/3
B= 7/20 - 3/8
B = 14/40 - 15/40
B = -1/40
C=18/40 x 25/-27
C = 18/40 x -25/27
C = -450/1080
C = -45/108
C = -5/12
D=-32/54 x 18 - 22
D = -576/54 - 22
D = -576/54 - 1188/54
D = -1764/54
D = -98/3
A= 5/7 - 14/25 x 15/49
A = 5/7 - 210/1225
A = 875/1225 - 210/1225
A = 665/1225
A = 19/35
B=1/4 +3/4 : (1+1/8)
B = 1/4 + 3/4 : (8/8 + 1/8)
B = 1/4 + 3/4 : 9/8
B = 1/4 + 3/4 x 8/9
B = 1/4 + 24/36
B = 9/36 + 24/36
B = 33/36
B = 11/12
C = 2/3 x 5/4 - 5/3 x 7/30
C = 10/12 - 35/90
C = 150/180 - 70/180
C = 80/180
C = 8/18
C = 4/9
A = 5/-24 + -1/8
A = -5/24 - 1/8
A = -5/24 - 3/24
A = -8/24
A = -1/3
B= 7/20 - 3/8
B = 14/40 - 15/40
B = -1/40
C=18/40 x 25/-27
C = 18/40 x -25/27
C = -450/1080
C = -45/108
C = -5/12
D=-32/54 x 18 - 22
D = -576/54 - 22
D = -576/54 - 1188/54
D = -1764/54
D = -98/3
A= 5/7 - 14/25 x 15/49
A = 5/7 - 210/1225
A = 875/1225 - 210/1225
A = 665/1225
A = 19/35
B=1/4 +3/4 : (1+1/8)
B = 1/4 + 3/4 : (8/8 + 1/8)
B = 1/4 + 3/4 : 9/8
B = 1/4 + 3/4 x 8/9
B = 1/4 + 24/36
B = 9/36 + 24/36
B = 33/36
B = 11/12
C = 2/3 x 5/4 - 5/3 x 7/30
C = 10/12 - 35/90
C = 150/180 - 70/180
C = 80/180
C = 8/18
C = 4/9
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