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Sagot :

Réponse :

Explications étape par étape

Bonjour

A = 2/3 - 7/3 x 8/35

A = 2/3 - 7/35 x 8/3

A = 2/3 - 7/(7 x 5) x 8/3

A = 2/3 - 1/5 x 8/3

A = 2/3 - 8/15

A = (2 x 5)/(3 x 5) - 8/15

A = 10/15 - 8/15

A = 2/15

B = (3/4 - 5/6) x 3/4

B = [(3 x 3)/(4 x 3) - (5 x 2)/(6 x 2)] x 3/4

B = (9/12 - 10/12) x 3/4

B = -1/12 x 3/4

B = -3/12 x 1/4

B = -1/4 x 1/4

B = -1/16

C = 22 : (2/3 - 5/2)

C = 22 : (4/6 - 15/6)

C = 22 : (-11/6)

C = 22 x -6/11

C = 22/11 x -6

C = 2 x -6

C = -12

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