Because C is a denominator first multiply by C CF + 3 = Ce Collect the like terms (the ones that contain C) CF - Ce = -3 Factorise C(F - e) = -3 C = -3/(F - e)
A better answer is C = 3/(e - F)
Subtract F from both sides 3/C = e - F Divide by 3 1/C = (e - F)/3 Find reciprocal of both sides C = 3/(e - F)
