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Sagot :

LOULAKAR

Bonsoir

13/15 - 3/5

= 13/15 - (3 x 3)/(3 x 5)

= 13/15 - 9/15

= 4/15

7/18 - 1/3

= 7/18 - (1 x 6)/(3 x 6)

= 7/18 - 6/18

= 1/18

3/4 + 1/8

= (3 x 2)/(4 x 2) + 1/8

= 6/8 + 1/8

= 7/8

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