Question

Make b the subject of the formula

A=1/2bh​

Answer 1

`\blue{b = (2A)/(h)}`

Explanation:

`A = (1)/(2)bh`

Step 1. Switch sides.

`(1)/(2)bh = A`

Step 2. Since the fraction 1/2 multiplies b, multiply both sides by the reciprocal of 1/2 which is 2.

`2 * (1)/(2)bh = 2 * A`

`bh = 2A`

Step 3. Since h is multiplying b, and you want b alone, divide both sides by h.

`(bh)/(h) = (2A)/(h)`

Answer:

`b = (2A)/(h)`