1/2(b) - b/1
There is nothing to solve becasue there is no equal sign
you can simplify it though :/
\(1/2(b) - b/1\\ =\frac{1}{2}b-\frac{b}{1}\\ =\frac{b}{2}-\frac{2b}{2}\\ =-\frac{b}{2}\)
