Respostas

2014-09-01T21:37:30-03:00
A Resposta é 10x - 5x  = + 5x 
2014-09-01T21:40:17-03:00
9x - (5 - x)
9x - 5 - x = 0
8x - 5 = o
8x = 5
x = 5/8