Question

solve for b in the mathematical formula A=1/2(a+b)h

Answer 1

Answer:

$b = \frac{2A}{h} - a$

Step-by-step explanation:

$A = \frac{1}{2} (a + b)h$

Multiply both sides by 2

We have

2A = (a + b)h

Divide both sides of the equation by h

That's

$\frac{(a + b)h}{h} = \frac{2A}{h}$

We have

$a + b = \frac{2A}{h}$

Move a to the right side of the equation to make b stand alone

We have the final answer as

$b = \frac{2A}{h} - a$

Hope this helps you