SOLUTION: solve by elimination 5r-3s=1 3r+5s=21

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Question 280086: solve by elimination
5r-3s=1
3r+5s=21
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
multiply the first by 5 and the second by 3
25r-15s=5
9r+15s=63
add
34r=68
r=2
5*2-3s=1
10-3s=1
9=3s
3=s
r=2 3=s