To rearrange the equation given, we need to take note the rules in adding, subtracting, multiplying and dividing terms. We rearrange the equation as follows:
((a+b/c)(d-e)=f) 1/(d-e)
(a+b/c = f/(d-e))c
a+b = fc/(d-e)
a = [fc/(d-e)] - b
Hope this answers the question.