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**Macleef** Corporate bonds are selling today for $1003.17 and mature in 3 years (interest annually) with YTM of 6.63%. Find the coupon rate.

$\displaystyle P = c * \frac{{1 - \frac{1}{(1+YTM)^n}}}{YTM} + f * \frac{1}{(1+YTM)^n}$

where P = price, c = coupon value, f = face value

$\displaystyle 1003.17 = c * \frac{{1 - \frac{1}{(1.0663)^3}}}{.0663} + f * \frac{1}{(1.0663)^3}$

I can't seem to isolate c and f as a fraction to calculate for the coupon rate: $\displaystyle Coupon Rate = \frac{c}{f}$