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Sagot :

E = (18/13 -9/5 ) x 2/3
E= ( 90/65 - 117/65 ) x 2/3
E= (-27/65) x 2/3
E = -54/195 :3/3 = {-18/65 }


G=(23/4+ 5/2) x (11/2 + 5/3) =
G= (23/4 + 10/4 ) x (33/6+ 10/6)
G= (33/4) x (43/6 )
G=1419/24 : 3/3 = {473/8}

Réponse :

(18/13 - 9/5) x 2/3 = (90/65 - 117/65) x 2/3 =  - 27/65) x 2/3 = - 18/65

(23/4 + 5/2) x (11/2 + 5/3) = (23/4 + 10/4) x (33/6 + 10/6) = 33/4) x 43/6 = 473/8

Explications étape par étape :

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