SOLUTION: 4/r+9-4r/3r=r/3

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Question 665845: 4/r+9-4r/3r=r/3
Found 2 solutions by pv=nrt15rcks, Alan3354:
Answer by pv=nrt15rcks(23) About Me  (Show Source):
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
4/r+9-4r/3r=r/3
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Add some parentheses to clarify.
Is it (4/r) + (9-4r)/3r ?
or 4/(r+9) - 4r/3r ?
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If the problem is ambiguous, it gets ignored.