B = 3 - 2/3 : 4/3 x 7 B = 3 - 2/3 x 3/4 x 7 B = 3 - 6/12 x 7 B = 3 - 42/12 B = 3 x 12 / 1 x 12 - 4212 B = 36/12 - 42/12 B = - 6/12 B = - 6 x 1 / - 6 x 2 B = - 1/2 L'inverse de B est donc : - 2
D = - 2/5 + 5/2 : - 3/4 + 1/2 D = - 2/5 + 5/2 x - 4/3 + 1/2 D = - 2/5 - 20/6 + 1/2 D = - 2 x 6 / 5 x 6 - 20 x 5 / 6 x 5 + 1 x 15 / 2 x 15 D = - 12/30 - 100/30 + 15/30 D = - 112/30 + 15/30 D = - 97/30 L'opposé de D est : 97/30
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Bonjour,B = 3 - 2/3 : 4/3 x 7
B = 3 - 2/3 x 3/4 x 7
B = 3 - 6/12 x 7
B = 3 - 42/12
B = 3 x 12 / 1 x 12 - 4212
B = 36/12 - 42/12
B = - 6/12
B = - 6 x 1 / - 6 x 2
B = - 1/2
L'inverse de B est donc : - 2
D = - 2/5 + 5/2 : - 3/4 + 1/2
D = - 2/5 + 5/2 x - 4/3 + 1/2
D = - 2/5 - 20/6 + 1/2
D = - 2 x 6 / 5 x 6 - 20 x 5 / 6 x 5 + 1 x 15 / 2 x 15
D = - 12/30 - 100/30 + 15/30
D = - 112/30 + 15/30
D = - 97/30
L'opposé de D est : 97/30