Question

Given the following formula solve for a

s = a+b+c/2

Answer 1

`a=2s-b-c`

Explanation:

Given formula:

`s=(a+b+c)/(2)`

To solve for
`a`

In order to solve for
`a` we will try to isolate
`a` on one side of the equation.

Steps to isolate
`a`.

1) Multiplying both sides by
`2` to remove fractions.

`2* s=2* (a+b+c)/(2)`

`2s=a+b+c`

2) Subtracting both sides by
`b`

`2s-b=a+b-b+c`

`2s-b=a+c`

3) Subtracting both sides by
`c`

`2s-b-c=a+c-c`

`2s-b-c=a`

Thus, we successfully isolated
`a` on one side. The formula for
`a` can be given as:

∴
`a=2s-b-c`