x+3y-z= -3

2x+2y+z=-8

I thought that i was supposed to use a matrix for this but i'm not sure how. How could I solve this?

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- June 7th 2009, 02:55 PMcalc_help123Systems of Eqations
x+3y-z= -3

2x+2y+z=-8

I thought that i was supposed to use a matrix for this but i'm not sure how. How could I solve this? - June 7th 2009, 03:08 PMRachel.F