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Sagot :

Réponse :

bonjour

Explications étape par étape :

1. 3/8 x -5/4 =-15/32

2. -2/7 x 1/-5 = 2/35

3. -15/7 x -2/5 x14/6

=-15/7 x-2/5 x7/3

=6/3

=2

4. -6/5 x3/2 x10/9

=-3/3

=-1

5. (8/7) / (21/2)

=8/7 x 2/21

=16/147

6.(1/2) /(14/5)

=1/2 x 5/14

=5/28

7. (3/5) / (21/15)

=3/5 x 15/21

=3/7

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