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Deyutzica
a fost răspuns

a). 3 supra 8 - [3 supra 14 - ( 5 supra 28 - 11 supra 84)]
va rogg!! e urgent!!

Răspuns :

Gabryela04
3/8 - [ 3/14 - ( 5/28 -11/84 )]=
=3/8 - ( 3/14 - 15-11/84 )
=3/8 - ( 3/14 - 4/84 )
=3/8 - ( 3/14 - 2/42 )
=3/8 - 9-2/42
=3/8 - 7/42
=3/8 -1/6
=9-4/24
=5/24