SOLUTION: 17=r/18

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Question 379313: 17=r/18
Answer by mananth(16946) About Me  (Show Source):
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17=r/18
+17=+r%2F18
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multiply both sides by 18
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+17%2A18+=+%28r%2A%28cross%2818%29%29%29%2F%28cross%2818%29%29
..
306 = r
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r= 306