Question

P=P+pgh. Solve for g.

Answer 1

If P, p, g, h are real numbers, then rewrite equation P=P+pgh as pgh=0. Solution to equation P=P+pgh is the following:
1) g=0, when p and h are nonzero; b) g is an arbitrary real number, when p=0 or h=0 or p=h=0.