SOLUTION: SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD PROBLEM: x-3y= 3 2x-5y= 4 I NEED STEP BY STEP HELP ON HOW TO SOLVE THIS PROBLEM... SO FAR I KNOW THAT MY ANSWER HAS

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Question 136182: SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD
PROBLEM: x-3y= 3
2x-5y= 4
I NEED STEP BY STEP HELP ON HOW TO SOLVE THIS PROBLEM... SO FAR I KNOW THAT MY ANSWER HAS TO LOOK LIKE THIS ( IN MATRIX FOR OF COURSE )
1 0...
0 1...
AND I ALSO KNOW HOW TO SET IT UP AT FIRST BUT THEN IT BECOMES VERY TRICKY
[ 1 -3.. 3 ]
[ 2 -5.. 4 ] THANK YOU SO MUCH FOR YOUR TIME :)

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
[ 1 -3.. 3 ]
[ 2 -5.. 4 ]
----------------
Subtract 2 times the 1st row from the 2nd row to get:
[ 1 -3.. 3 ]
[ 0 1.. -2]
----------------
Add 3 times the 2nd row to the 1st row to get:
[ 1 .0.. -3]
[ 0 1.. -2]
=================
Cheers,
Stan H.

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