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December 20, 2014

December 20, 2014

Posted by **Shelbourne** on Tuesday, January 6, 2009 at 4:37pm.

0.2x+0.04y-0.2z=-.03

1.1x-0.6y+0.7z=0.5

0.25x+0.3y-0.35z=0.1

Would you be able to explain WHY you are doing your particular steps (my book offers explanations for similar problems, but I do not understand why each step takes place)

Thanks for your help

~Shel

- Algebra -
**Reiny**, Tuesday, January 6, 2009 at 5:07pmyou would have a 3x3 matrix

.2 .04 .2

1.1 .5 .7

.25 .3 35

multiplied by the column matrix

x

y

z

and equal that to the column matrix

.03

.5

.1

I assume you know how to multiply one matrix by another.

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