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Sagot :

Bonsoir,

7/10 +3/5

= 7/10 + 6/10

= 13/10

7/4 + 3/8

= 14/8 + 3/8

= 17/8

4/3 -2/9

= 12/9 - 2/9

= 10/9

52/30  -4/10

= 52/30 - 12/30

= 40/30

=4/3

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