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Sagot :

A=7/9-4/9*3/8 = 7/9 - 12/72 = 56/72 - 12/72 = 44/72 = 11/18 en divisant par 4

voili voilou

Salut

A = 7/9-4/9x3/8

A = 7/9 - 12/72

A = 56/72 - 12/72

A = 44/72

PGCD(44;72) = 4

 

44/4 = 11

72/4 = 18

donc A= 11/18

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