Respuestas

2013-09-03T14:21:11+02:00
Resolvemos:

[(-10-6/2+6)(12+12/3)]/[(-12+6/4)(12/3+16/4)] =

[(-10-3+6)(12+4)]/[(-12+3/2)(4+4)] =

[(-7)(16)]/[(-21/2)(8)] =

[(-112)]/[(-84)] =

(-28/-21)= 4/3