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Sagot :

Bonjour,

-7/12 -1/3 = -7/12 - 4/12 = -11/12

1 - (-1/3) = 3/3 +1/3 = 4/3

-11/12 + 1 = -11/12 +12/12 = 1/12

             1/12

      -11/12      1

-7/12      -1/3    4/3

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