how would i solve for C in this equation

(a/(b+c))-d = e/f

(a/(b+c))-d = e/f

(a/(b+c)) = e/f + d
(a/(b+c)) = (e + df)/f
(b+c)/a = f/(e+df)
b+c = af/(e+df)

c = af/(e+df)- b