What could be the solution for this please?

1) Compute the yield to maturity of a 3-year maturity 16% bond purchased at 970 t, whose nominal value will be repaid at the end of maturity. Start with 17%. 2) Compute the yield to maturity of a 3-year maturity 16% bond purchased at 970 t, whose nominal value will be repaid at the end of maturity. Start with 17%