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Sagot :

Bonjour

A = - 4/15 + 3/10

A = (- 4 x 2) / (15 x 2) + (3 x 3) / (10 x 3)

A = - 8/30 + 9/30

A = - 1/30

B = 11/9 - 1/6

B = (11 x 2) / (9 x 2) - (1 x 3) / (6 x 3)

B = 22/18 - 3/18

B = 19/18

C = - 2 + 14/3

C = (- 2 x 3) / (1 x 3) + 14/3

C = - 6/3 + 14/3

C = 8/3

D = - 1,1/0,7 - 1/1,4

D = (- 1,1 x 2) / (0,7 x 2) - 1/1,4

D = - 2,2/1,4 - 1/1,4

D = - 1,2/ 1,4.

D = (- 1,2 x 10) / (1,4 x 10)

D = - 12/14

D = (2 x - 6) / (2 x 7)

D = - 6/7.

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