SOLUTION: Solve the system of equations using matrices and row of operations. 3x-5y=3 15x+5y=21

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Question 869344: Solve the system of equations using matrices and row of operations.
3x-5y=3
15x+5y=21
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3,-5,3
15,5,21
divide row 1 by 3
1,-5/3,1
15,5,21
add down (-15) *row 1 to row 2
1,-5/3,1
0,30,6
divide row 2 by 30
1,-5/3,1
0,1,6/30
add (5/3) *row 2 to row 1
1,0,20/15
0,1,1/5

1,0,4/3
0,1,1/5