bonjour
le plus simple
(2/7)¹ = 2/7
puis
opposé de 8 = -8
opposé de 8/7 = -8/7
somme = -8 + (-8/7) = (-56-8)/7 = -64/7
et inverse = - 7/64
opposé de a = - a
inverse de a = 1/a
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bonjour
le plus simple
(2/7)¹ = 2/7
puis
opposé de 8 = -8
opposé de 8/7 = -8/7
somme = -8 + (-8/7) = (-56-8)/7 = -64/7
et inverse = - 7/64
opposé de a = - a
inverse de a = 1/a