Respostas

2013-12-05T10:56:56-02:00
4x = 1/10 - 2 = 4/5 - 2 - x
40x - 1 - 20 = 40 - 20 - 10x
40x + 10x = 40 - 20 + 20 + 1
50x = 40+1
x = 41/50