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Sagot :

MARIEJOE57

Réponse :

bonjour

Explications étape par étape :

2÷5+7÷10

= 2/5 +7/10

=4/10 + 7/10

=11/10

5÷7-15÷2 =

5/7  - 15/2

=10/14 - 105/14

= -95/14

2÷3×7÷5

=2/3 x 7/5

=14/15

7÷128×258÷3

=7/128  x 258/3

=7/128 x86

=7/64 x 43

=301/64

121÷10×5÷11 =

121/10 x5/11

=11/2

12÷7÷5÷2

12/7  /  5/2

=12/7  x 2/5

=24/35

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