Respostas

2013-11-07T11:08:31-02:00
4/5 de 500 = (4x500)/5 = 4 x 100 = 400
2/3 de 27 = (2x27)/3 = 2x9 = 18
7/11 de 99 = (7x99)/11 = 7x9 = 63
1 5 1