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Sagot :

Réponse :

-5/9 + 3/4

(Multiple le moins commun de 9 et 4 est 9 X 4 = 36)

Donc, -5/9 = -5/9  X  4/4 = (-5 X 4) / (9 X 4) = -20/36 (Parce 4/4 = 1) et

3/4 = 3/4 X 9/9 = (3 X 9) / (4 X 9) = 27/36

Donc, l'éxpression est    

-20/36 + 27/36

= 27/36 - 20/36

= (27 - 20)/36

= 7/36

Donc, -5/9 + 3/4 = 7/36

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