SOLUTION: Solve 7-r/9-r = 2/r-9 R= Thank you

Question 328098: Solve
7-r/9-r = 2/r-9
R=

Thank you
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
Are you solving for little r or big R?
I assume that you are trying to find the value of little r.
Multipy (7 - r) and (9 - r) by -1.
Afterward, (7 - r) becomes (r - 7) and (9 - r) becomes (r - 9).
We now have the following fraction:
Cross-multiply.
2(r - 9) = (r - 7)(r - 9)
After doing the math on paper, I found r to be 9.

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