Answer and Step-by-step explanation:
Solve for b.
A = [tex](\frac{1}{2}) (h)(a+b)[/tex]
Divide by h and multiply by 2 from both sides.
[tex]\frac{2A}{h} = a+ b[/tex]
Subtract a from both sides.
[tex](\frac{2A}{h} ) - a = b[/tex]
