SOLUTION: Solve using elimination method 7r-3s=35 3r+7s=73

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Question 242365: Solve using elimination method
7r-3s=35
3r+7s=73
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the first eq. by 7 and the second by 3 and add them together to get rid of s.
+7%287r-3s%29%2B3%283r%2B7s%29=3%2835%29%2B7%2873%29+
+49r-21s%2B9r%2B21s=245%2B219+
+58r=464
+r=8
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7r-3s=35
7%288%29-3s=35
56-3s=35
-3s=-21
s=7
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r=8, s=7