Réponse :
bonjour
A = 5/8 + 3/20
A = 25/40 + 6 /40
A = 31/40
B = 4/7 - 1/15
B = 60/105 - 7 /105
B = 53 /105
C = - 5/12 + 4/15
c = - 25/60 + 16/60
C = - 9/60 = - 3 /20
D = - 2/15 - 3/10
D = - 4/30 - 9/30
D = - 13/30
E = - 11/20 + 7/12
E = - 33/60 + 35/60
E = 2 /60 = 1 /30
F = - 2/11 - 5 /33
F = - 6/33 - 5 /33
F = - 11 /33 = - 1 /3
Explications étape par étape
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Réponse :
bonjour
A = 5/8 + 3/20
A = 25/40 + 6 /40
A = 31/40
B = 4/7 - 1/15
B = 60/105 - 7 /105
B = 53 /105
C = - 5/12 + 4/15
c = - 25/60 + 16/60
C = - 9/60 = - 3 /20
D = - 2/15 - 3/10
D = - 4/30 - 9/30
D = - 13/30
E = - 11/20 + 7/12
E = - 33/60 + 35/60
E = 2 /60 = 1 /30
F = - 2/11 - 5 /33
F = - 6/33 - 5 /33
F = - 11 /33 = - 1 /3
Explications étape par étape