Respostas

2013-09-18T15:14:02-03:00
2/3x = 1 5/7 

2/3x = 12/7 
2 * 7 * x = 12 * 3 
14x = 36 
x = 36/14 
x = 18/7 ou 2 4/7 ou 2.571
1 5 1
2013-09-18T15:17:10-03:00