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Sagot :

Bonjour,

A= 7/3 -4/3 * 5/8

=   7/3 - 20/ 24

= 56/24 - 20/24

=36/24 = 18/12 = 9/6 = 3/2

B= -4/ 45 *7/3

= -28 / 135  

C=  -8/3 * -6/5 +7/4

=  48/ 15 + 7/4

= 16/5 +7/4

= 64/20+35/20

= 99/20

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