Respostas

2014-08-29T17:16:47-03:00
-2x=5*10
-2x=50
-50=2x
-50/2=x
-25=x
2014-08-29T17:24:10-03:00
2x = 5 x  \frac{1}{100}
2x =  \frac{5}{100}
X =  \frac{5}{100} / 2
x =  \frac{5}{200}

Ou X = 0,025