(adsbygoogle = window.adsbygoogle || []).push({}); LINEAR ALGEBRA... URGENT... help!

1. The problem statement, all variables and given/known data

Solve the System...

[1,0,0,-7,8] That is a 3x5 matrix.

[0,1,0,3,2,]

[0,0,1,1,-5]

2. Relevant equations

...

3. The attempt at a solution

I dont know why this is so hard to me, ive literally tried for about 2 hours to solve this. Calc 1-4 came naturally to me, but this is giving me so much trouble. Id be more happy right now with someone telling me the best way to approach these problems than a hint at this specific answer. Whenever i try to eliminate one variable, another one comes into the row and i am stuck with 2 variables, so i cant solve for any of the variables... please someone give me some advice on the best way to solve these... im dying over here

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# LINEAR ALGEBRA help!

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