Write h in terms of a, b, c, d if a = (frac{b(1 – ch)}{a – dh})

A.
h = (frac{a – b}{ad}) 
B.
h = (frac{1 – b}{ad – bc}) 
C.
h = (frac{(a – b)^2}{ad – bc}) 
D.
h = (frac{a – b}{ad – bc}) 
E.
h = (frac{b – a}{ab – dc})
Correct Answer: Option D
Explanation
a = (frac{b(1 – ch)}{a – dh})
a = (frac{b – bch}{1 – dh})
= a – adh
= b – bch
a – b = bch + adn
a – b = adh
a – b = h(ad – bc)
h = (frac{a – b}{ad – bc})