Hi!

I´m having some issues solving this equation system.

$\displaystyle x_1+x_2+2x_3 = 3$

$\displaystyle x_1-x_2+8x_3 = -1$

$\displaystyle 2x_1+3x_2+x_3 = 8$

Nomatter what I do I cant eliminate the 2 terms to get one of the unknows alone. No problem eliminating 1 term thought if you ad the first 2 terms x_2 is eliminated... great and now lets eliminate one more term....emm emmm can´t do it! whats wrong...?

Any hints?

Thanks in advance