Respuestas

2012-05-17T17:04:19+02:00

3/8-1/2(x-1/2)=1/8(1-x)-x/3

3/8-x/2+1/4=1/8-x/8-x/3 |*24

9-12x+6=3-3x-8x

-x=-12

x=12