Clear the fraction by multiplying both sides by the denominator which is 2.
To solve for b, divide both sides by h:
For additional explanation on this topic of "Literal Equations", see my own website. Do a "Bing" or "Google" search for my last name "Rapalje". Look for "Rapalje Homepage" near the top of these searches. Then near the top of my Homepage, look for "Basic, Intermediate and College Algebra". Choose "Basic Algebra", "Chapter 3", "Section 3.07".
R^2
Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus