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Sagot :

VINS

bonjour

je n'y comprends rien et tu affiches lycée ???

5/4 + 5/3 x 21/4

= 5/4 + 105/12

=  15/12 + 105/12

=  120/12 = 10

16/21 : 8 /7 + 5 /6

= 16/21 x 7/8 + 5 /6

=  112/168 + 5 /6

=  2/ 3 + 5 /6

=  4/6 + 5 /6 = 9 / 6

=  3 /2

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