Respuesta :

A = [tex] \frac{1}{2} [/tex]bh   Multiply both sides by 2 to cancel out the fraction
2A = bh   Divide both sides by h
[tex] \frac{2A}{h} [/tex] = b   Switch the sides to make it easier to read
b = [tex] \frac{2A}{h} [/tex]