Respuesta :

a = 1/2bh Solve for b. 
To solve for a variable means to isolate the variable on one side of the equation. 
NOTE: We can write (1/2)(bh) as one fraction like this (bh/2). They mean the same thing. 
We now have this: 
a = (bh/2) 
We multiply both sides of the fractional equation by 2. This is done to remove the fraction. 

Doing this we now have a linear equation: 
2a = bh 

We now divide both sides of the equation by h to find the value of b. 
Final answer:
 
(2a/h) = b