salut
54 pas visible :(
55
A = - 6/9 + 7/3
A = - 2x3/3x3 + 7/3
A = -2/3 + 7/3 = 5/3
56
B = 10/15 - 7/3
B = 2x5/3x5 - 7/3 = 2/3 - 7/3 = - 5/3
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salut
54 pas visible :(
55
A = - 6/9 + 7/3
A = - 2x3/3x3 + 7/3
A = -2/3 + 7/3 = 5/3
56
B = 10/15 - 7/3
B = 2x5/3x5 - 7/3 = 2/3 - 7/3 = - 5/3