[ARPAN]

for the question posted by bluescreenofdebt.

steps where the question fails to obey mathematical principles

that basically is a mathematical illusion. the fault lies in the third step where u get 0=0
(considering the fact that x=y)
and then moving over to the fourth step (which equates 0*x= 0*y=0) which is baseless here since zero multiplied by any finite number gives zero and equality that x=y need not hold.
further the step x+y=y can be reduced to x=0 i.e. what i have been saying has been proved mathematically...i.e. x=y=0

ultimately what u get is that in the entire steps u have been equating 0=0

CONVINCED!!!