2 + 4_m_ 6
_x_ = ——————————— _A_ - ————————— _B_,
_m_² - _m_ _m_² - _m_
12 _B_ 6 _A_
_y_ = ————————— ————— - -————————— ————— .
_m_³ - _m N_ _m_² - _m N_
In the present case,
_m_ = 8, _N_ = 14, _A_ = 138·4, _B_ = 770·9;
whence _x_ = 1·44
_y_ = 0·252,
and we have the formula,
_F_ = 1·44 + 0·252 _R_.