SOLUTION: r/4 - 1 = 4

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Question 823362: r/4 - 1 = 4
Answer by erica65404(394) About Me  (Show Source):
You can put this solution on YOUR website!
%28r%2F4%29+-1+=+4
%28r%2F4%29+-1+%2B1+=+4+%2B1
r%2F4+=+5
4+%2A+%28r%2F4%29+=+3+%2A+5
r=15
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