Answer :
If I'm reading your problem correctly:
(ax)/(c-b)= (c/b)
cross multiply
axb = c(c-b)
divide both sides by ab
x = (c(c-b))/(ab) OR x = (c^2 - cb)/(ab)
(ax)/(c-b)= (c/b)
cross multiply
axb = c(c-b)
divide both sides by ab
x = (c(c-b))/(ab) OR x = (c^2 - cb)/(ab)