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Sagot :

Bonjour

A = (7 - 7 x 5) / (6 x 2 - 5)

A = (7 - 35) / (12 - 5)

A= - 28/7

A =- 4

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

B = (- 2) x (5 + (3 - (- 4))

B = - 2 x (5 + 3 + 4)

B = - 2 x 12

B = - 24

C = (- 7 x (- 3) - (- 3) x (- 5)) / (12 : (- 3) - 2)

C = (21 - 15) / (- 4 - 2)

C = 6/-6

C = - 1.

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