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Sagot :

MARIEJOE57

Réponse :

bonjour

Explications étape par étape :

1/4  / 4

=1/4 x 1/4

= 1/16

-6/-21  x  -14/8

=6/21  x -7/4

= 3x2/3x7   /   -7/2x2

=-1/2

2/3 - 5/2

=2x2/3x2  - 5x3/2x3

=4/6 - 15/6

=-11/6

2/3  /  3/2

=2/3 x 2/3

=4/9

3- 4/5

= 15/5 - 4/5

=11/5

-4 x 14.312 x (-0.25)

=-4 x 14.312 x -1/4

= 14.312

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